Q: What is the sum of all factors of the number 259,290 excluding 259,290?

A: 440,838

Why is 440,838 the sum of all factors of 259,290, excluding 259,290?

The factors of the number 259,290 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 43, 45, 67, 86, 90, 129, 134, 201, 215, 258, 335, 387, 402, 430, 603, 645, 670, 774, 1005, 1206, 1290, 1935, 2010, 2881, 3015, 3870, 5762, 6030, 8643, 14405, 17286, 25929, 28810, 43215, 51858, 86430, 129645, 259290.

If you add them up, you will get the total of 259,730. Now subtract 259,290 to get 440,838