Q: What is the sum of all factors of the number 28,004,720 excluding 28,004,720?

A: 39,357,040

Why is 39,357,040 the sum of all factors of 28,004,720, excluding 28,004,720?

The factors of the number 28,004,720 are: 1, 2, 4, 5, 8, 10, 16, 20, 29, 40, 58, 80, 116, 145, 232, 290, 464, 580, 1160, 2320, 12071, 24142, 48284, 60355, 96568, 120710, 193136, 241420, 350059, 482840, 700118, 965680, 1400236, 1750295, 2800472, 3500590, 5600944, 7001180, 14002360, 28004720.

If you add them up, you will get the total of 28,004,759. Now subtract 28,004,720 to get 39,357,040