Q: What is the sum of all factors of the number 256,616,815 excluding 256,616,815?

A: 126,705,425

Why is 126,705,425 the sum of all factors of 256,616,815, excluding 256,616,815?

The factors of the number 256,616,815 are: 1, 5, 7, 13, 35, 65, 89, 91, 445, 455, 623, 1157, 3115, 5785, 6337, 8099, 31685, 40495, 44359, 82381, 221795, 411905, 563993, 576667, 2819965, 2883335, 3947951, 7331909, 19739755, 36659545, 51323363, 256616815.

If you add them up, you will get the total of 256,616,941. Now subtract 256,616,815 to get 126,705,425