Factors of 321 are numbers that, when multiplied in pairs give the product as 321. There are overall 4 factors of 321 among which 321 is the biggest factor and 1, 3, 107, 321 are positive factors. The Prime Factors of 321 are 3 × 107 and its Factors in Pairs are (1, 321), (3, 107).

• All Factors of 321: 1, 3, 107 and 321
• Negative Factors of 321: -1, -3, -107 and -321
• Prime Factors of 321: 3, 107
• Prime Factorization of 321: 3¹ × 107¹
• Sum of Factors of 321: 432

1.	What Are the Factors of 321?
2.	Factors of 321 by Prime Factorization
3.	Factors of 321 in Pairs
4.	FAQs on Factors of 321

Factors of 321 are pairs of those numbers whose products result in 321. These factors are either prime numbers or composite numbers.

How to Find the Factors of 321?

To find the factors of 321, we will have to find the list of numbers that would divide 321 without leaving any remainder.

• 321/3 = 107; therefore, 3 is a factor of 321 and 107 is also a factor of 321.
• 321/321 = 1; therefore, 321 is a factor of 321 and 1 is also a factor of 321.

Similarly we can find other factors. Hence, the factors of 321 are 1, 3, 107, 321.

☛ Also Check:

• Factors of 48 - The factors of 48 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 48
• Factors of 78 - The factors of 78 are 1, 2, 3, 6, 13, 26, 39, 78
• Factors of 66 - The factors of 66 are 1, 2, 3, 6, 11, 22, 33, 66
• Factors of 98 - The factors of 98 are 1, 2, 7, 14, 49, 98
• Factors of 13 - The factors of 13 are 1, 13

The number 321 is composite and therefore it will have prime factors. Now let us learn how to calculate the prime factors of 321. The first step is to divide the number 321 with the smallest prime factor, here it is 3. We keep dividing until it gives a non-zero remainder.

• 321 ÷ 3 = 107

Further dividing 107 by 3 gives a non-zero remainder. So we stop the process and continue dividing the number 107 by the next smallest prime factor. We stop ultimately if the next prime factor doesn't exist or when we can't divide any further.

So, the prime factorization of 321 can be written as 3¹ × 107¹ where 3, 107 are prime.

Pair factors of 321 are the pairs of numbers that when multiplied give the product 321. The factors of 321 in pairs are:

• 1 × 321 = (1, 321)
• 3 × 107 = (3, 107)

Negative pair factors of 321 are:

• -1 × -321 = (-1, -321)
• -3 × -107 = (-3, -107)

NOTE: If (a, b) is a pair factor of a number then (b, a) is also a pair factor of that number.