Q: What is the sum of all factors of the number 13,287,760 excluding 13,287,760?

A: 17,826,320

Why is 17,826,320 the sum of all factors of 13,287,760, excluding 13,287,760?

The factors of the number 13,287,760 are: 1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 163, 326, 652, 815, 1019, 1304, 1630, 2038, 2608, 3260, 4076, 5095, 6520, 8152, 10190, 13040, 16304, 20380, 40760, 81520, 166097, 332194, 664388, 830485, 1328776, 1660970, 2657552, 3321940, 6643880, 13287760.

If you add them up, you will get the total of 13,287,777. Now subtract 13,287,760 to get 17,826,320