Factors of 561 in pairs

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

The number 561 is a composite number. So, 561 has more than one factor pair.

These are all the factor pairs of 561:

• 1,561
• 3,187
• 11,51
• 17,33

Here is how to find the factor pairs for the number 561:

• 561 divided by 1 is 561. So, (1, 561) is a factor pair of 561
• 561 divided by 3 is 187. So, (3, 187) is a factor pair of 561
• 561 divided by 11 is 51. So, (11, 51) is a factor pair of 561
• 561 divided by 17 is 33. So, (17, 33) is a factor pair of 561

Factor pairs of 561 that ads up to a number:

• The factors of 561 that adds up to 562 are 1 and 561
• The factors of 561 that adds up to 564 are 3 and 187
• The factors of 561 that adds up to 572 are 11 and 51
• The factors of 561 that adds up to 578 are 17 and 33

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 561 is 3•11•17.

The prime factors of 561 are 3, 11 and 17. It is the list of the integer's prime factors.