Q: What is the sum of all factors of the number 625,005 excluding 625,005?

A: 610,515

Why is 610,515 the sum of all factors of 625,005, excluding 625,005?

The factors of the number 625,005 are: 1, 3, 5, 9, 15, 17, 19, 43, 45, 51, 57, 85, 95, 129, 153, 171, 215, 255, 285, 323, 387, 645, 731, 765, 817, 855, 969, 1615, 1935, 2193, 2451, 2907, 3655, 4085, 4845, 6579, 7353, 10965, 12255, 13889, 14535, 32895, 36765, 41667, 69445, 125001, 208335, 625005.

If you add them up, you will get the total of 625,615. Now subtract 625,005 to get 610,515