# Prime factorization of 391

Here you will see step by step solution of prime factorization of 391, how to find factors of 391, you will see all factors of 391, how many factors of 391 has? Factors of 391 are 1, 17, 23, 391, we can see that 391 has 4 factor and sum of all factors is 432.

• All Factors of 391: 1, 17, 23, 391
• Prime Factors of 391: 17 × 23
• Prime Factorization of 391: 171 × 231
• Sum of Factors of 391: 432
• Is 391 prime number: No

### How to find factors of 391 by Division Method?

To find the factors of 391 by division method, we need the find the all numbers between 1 to 391, which divide 391 with 0 remainder, then the number is factor of 391.

### Pair factors of 391

• 391/1 = 391 [ 1 × 391 (1, 391) 1 and 391 is pair factor of 391]
• 391/17 = 23 [ 17 × 23 (17, 23) 17 and 23 is pair factor of 391]
• 391/23 = 17 [ 23 × 17 (23, 17) 23 and 17 is pair factor of 391]
• 391/391 = 1 [ 391 × 1 (391, 1) 391 and 1 is pair factor of 391]

As we checked numbers between 1 to 391 that are not leaving any remainder, hence we can say factors of 391 is 1, 17, 23, 391.

Also note that, in exponential form prime factorization of 391 is written as 171 × 231 and it is a composite number.

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