Factors of 391 in pairs

Factors are pairs of numbers which, if multiplied together, give the original number.

The number 391 is a composite number. So, 391 has more than one factor pair.

These are all the factor pairs of 391:

• 1,391
• 17,23

Here is how to find the factor pairs for the number 391:

• 391 divided by 1 is 391. So, (1, 391) is a factor pair of 391
• 391 divided by 17 is 23. So, (17, 23) is a factor pair of 391

Factor pairs of 391 that ads up to a number:

• The factors of 391 that adds up to 392 are 1 and 391
• The factors of 391 that adds up to 408 are 17 and 23

Note 1: if we change the order of all pairs above, we can double the number of pairs. We choose not to show them.
Note 2: do not confuse these pairs with prime factors. See below some info:

The factorization or decomposition of 391 is 17•23.

The prime factors of 391 are 17 and 23. It is the list of the integer's prime factors.