Q: What is the sum of all factors of the number 100,778,205 excluding 100,778,205?

A: 79,428,003

Why is 79,428,003 the sum of all factors of 100,778,205, excluding 100,778,205?

The factors of the number 100,778,205 are: 1, 3, 5, 11, 15, 33, 41, 55, 123, 165, 205, 451, 615, 1353, 2255, 6765, 14897, 44691, 74485, 163867, 223455, 491601, 610777, 819335, 1832331, 2458005, 3053885, 6718547, 9161655, 20155641, 33592735, 100778205.

If you add them up, you will get the total of 100,778,284. Now subtract 100,778,205 to get 79,428,003