Q: What is the sum of all factors of the number 643,612,216 excluding 643,612,216?

A: 659,252,984

Why is 659,252,984 the sum of all factors of 643,612,216, excluding 643,612,216?

The factors of the number 643,612,216 are: 1, 2, 4, 8, 13, 26, 52, 104, 409, 818, 1636, 3272, 5317, 10634, 15131, 21268, 30262, 42536, 60524, 121048, 196703, 393406, 786812, 1573624, 6188579, 12377158, 24754316, 49508632, 80451527, 160903054, 321806108, 643612216.

If you add them up, you will get the total of 643,612,875. Now subtract 643,612,216 to get 659,252,984