Q: What is the sum of all factors of the number 213,115,100 excluding 213,115,100?

A: 291,389,068

Why is 291,389,068 the sum of all factors of 213,115,100, excluding 213,115,100?

The factors of the number 213,115,100 are: 1, 2, 4, 5, 10, 11, 20, 22, 25, 44, 50, 55, 100, 110, 220, 275, 550, 1100, 193741, 387482, 774964, 968705, 1937410, 2131151, 3874820, 4262302, 4843525, 8524604, 9687050, 10655755, 19374100, 21311510, 42623020, 53278775, 106557550, 213115100.

If you add them up, you will get the total of 213,115,391. Now subtract 213,115,100 to get 291,389,068