Q: What is the sum of all factors of the number 121,256,715 excluding 121,256,715?

A: 78,284,085

Why is 78,284,085 the sum of all factors of 121,256,715, excluding 121,256,715?

The factors of the number 121,256,715 are: 1, 3, 5, 15, 61, 89, 183, 267, 305, 445, 915, 1335, 1489, 4467, 5429, 7445, 16287, 22335, 27145, 81435, 90829, 132521, 272487, 397563, 454145, 662605, 1362435, 1987815, 8083781, 24251343, 40418905, 121256715.

If you add them up, you will get the total of 121,256,793. Now subtract 121,256,715 to get 78,284,085