Q: What is the sum of all factors of the number 787,370,815 excluding 787,370,815?

A: 397,230,785

Why is 397,230,785 the sum of all factors of 787,370,815, excluding 787,370,815?

The factors of the number 787,370,815 are: 1, 5, 7, 11, 35, 55, 77, 181, 385, 905, 1267, 1991, 6335, 9955, 11299, 13937, 56495, 69685, 79093, 124289, 395465, 621445, 870023, 2045119, 4350115, 10225595, 14315833, 22496309, 71579165, 112481545, 157474163, 787370815.

If you add them up, you will get the total of 787,371,212. Now subtract 787,370,815 to get 397,230,785