Q: What is the sum of all factors of the number 815,531,765 excluding 815,531,765?

A: 228,957,835

Why is 228,957,835 the sum of all factors of 815,531,765, excluding 815,531,765?

The factors of the number 815,531,765 are: 1, 5, 29, 43, 139, 145, 215, 695, 941, 1247, 4031, 4705, 5977, 6235, 20155, 27289, 29885, 40463, 130799, 136445, 173333, 202315, 653995, 866665, 1173427, 3793171, 5624357, 5867135, 18965855, 28121785, 163106353, 815531765.

If you add them up, you will get the total of 815,531,993. Now subtract 815,531,765 to get 228,957,835