Factors of 324
Did you know that 324 is an even composite number obtained as a product of 2s and 3s, two prime numbers? Product of two prime numbers will always result in a composite number, as the two primes which are multiplied will be the factors of that composite number. In this chapter, we will calculate the factors of 324, prime factors of 324, and factors of 324 in pairs along with solved examples for a better understanding.
 Factors of 324: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, and 324
 Prime Factorization of 324: 324 = 2 × 2 × 3 × 3 × 3 × 3 = 2^{2} × 3^{4}
1.  What Are the Factors of 324? 
2.  How to Calculate the Factors of 324? 
3.  Factors of 324 by Prime Factorization 
4.  Factors of 324 in Pairs 
5.  FAQs on Factors of 324 
What Are the Factors of 324?
The numbers which on multiplication give the product as 324 are referred to as factors of 324. The factors of 324 are numbers which divide it without leaving any remainder. So, when we multiply any two whole numbers with each other and get 324 as the answer, we say that both these numbers are the factors of 324.
How to Calculate the Factors of 324?
In order to calculate the factors of 324, we need to find all the numbers which would divide 324 without leaving any remainder. Let's start by checking for the factors of 324, starting from 1 to 324. We can express 324 as a product of its prime factors in the prime factorization method and we divide 324 with its divisors in the division method. For the numbers dividing 324 entirely, the divisors as well as their quotients are the factors of 324.
Numbers Dividing 324  Factors of 324 

324/1 = 324  1 and 324 are factors of 324. 
324/2 = 162  2 and 162 are factors of 324. 
324/3 = 108  3 and 108 are factors of 324. 
324/4 = 81  4 and 81 are factors of 324. 
324/6 = 54  6 and 54 are factors of 324. 
324/9 = 36  9 and 36 are factors of 324. 
324/12 = 27  12 and 27 are factors of 324. 
324/18 = 18  18 and 18 are factors of 324. 
Hence, the factors of 324 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, and 324.
Explore factors using illustrations and interactive examples.
 Factors of 441  The factors of 441 are 1, 3, 7, 9, 21, 49, 63, 147, and 441.
 Factors of 108  The factors of 108 are 1, 2, 3 , 4, 6, 9, 12, 18, 27, 36, 54, and 108.
 Factors of 288  The factors of 288 are 1, 2, 3, 4, 6, 8, 9, 12, 16,18, 24, 32, 36, 48, 72, 96,144, and 288.
 Factors of 81  The factors of 81 are 1, 3, 9, 27, and 81.
 Factors of 162  The factors of 162 are 1, 2, 3, 9, 27, 54, 81, and 162.
 Factors of 36  The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36.
Factors of 324 by Prime Factorization
Prime factorization means expressing a composite number as the product of its prime factors.
To get the prime factorization of 324, we use two methods:
 Method 1: Factor Tree Method
 Method 2: UpsideDown Division Method
Method 1: Factor Tree Method
The factor tree of 324 obtained is:
Method 2: UpsideDown Division Method
We divide 324 by its smallest prime factor, which is 2.
324/2 = 162
Now, 162 is divided by its smallest prime factor and the quotient is obtained. This process is repeated till we get the quotient as 1. The prime factorization of 324 is shown below:
Hence, the prime factors of 324 are 2 and 3.
The prime factorization of 324 is 2 × 2 × 3 × 3 × 3 × 3.
Factors of 324 in Pairs
The pairs of numbers, which when multiplied give 324, are known as the factor pairs of 324. Observe the following factors of 324 in pairs. If we consider negative integers, then both the numbers in the pair factors will be negative as (  ve ×  ve ) = +ve.
 Positive Pair Factors of 324 are: (1, 324), (2, 162), (3, 108), (4, 81), (6, 54), (9, 36), (12, 27), (18, 18)
 Negative Pair Factors of 324 are: (1, 324), (2, 162), (3, 108), (4, 81), (6, 54), (9, 36), (12, 27), (18, 18)
Important Notes:
 As 324 ends with 24 as last two digits and 24 is divisible by 4, 4 is one of the factors of 324.
 324 is a perfect square number. Thus, one of its pair factors is (18, 18) as 18^{2} is 324.
Factors of 324 Solved Examples

Example 1: Andrea has to find the common factors of 324 and 432. Help her find them.
Solution:
The factors of 324 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, and 324.
The factors of 432 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 27, 36, 48, 54, 72, 108, 144, 216, and 432.Hence, the common factors of 324 and 432 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, and 108.

Example 2: Gabrielle's teacher told him that 12 is one of the factors of 324. Can you help him find the other factor?
Solution:
324 = Factor 1 × Factor 2
Hence, 324 =(12) × Factor 2Factor 2 = 324/(12) =(27)
Hence, the other factor is 27.
FAQs on Factors of 324
What are the factors of 324?
The factors of 324 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, and 324.
What are the prime factors of 324?
The prime factors of 324 are 2 and 3.
Are all the factors of 324 prime?
No, all the factors of 324 are not prime.
What are the common factors of 324 and 243?
The factors of 324 are 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, and 324. The factors of 243 are 1, 3, 9, 27, 81, and 243. Hence, the common factors of 324 and 243 are 1, 3, 9, 27, and 81.
Is 7 a factor of 324?
No, 7 is not a factor of 324.