Q: What is the sum of all factors of the number 1,291,440 excluding 1,291,440?

A: 2,712,768

Why is 2,712,768 the sum of all factors of 1,291,440, excluding 1,291,440?

The factors of the number 1,291,440 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 40, 48, 60, 80, 120, 240, 5381, 10762, 16143, 21524, 26905, 32286, 43048, 53810, 64572, 80715, 86096, 107620, 129144, 161430, 215240, 258288, 322860, 430480, 645720, 1291440.

If you add them up, you will get the total of 1,291,442. Now subtract 1,291,440 to get 2,712,768