Q: What is the sum of all factors of the number 396,990 excluding 396,990?

A: 731,826

Why is 731,826 the sum of all factors of 396,990, excluding 396,990?

The factors of the number 396,990 are: 1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 30, 33, 45, 55, 66, 90, 99, 110, 165, 198, 330, 401, 495, 802, 990, 1203, 2005, 2406, 3609, 4010, 4411, 6015, 7218, 8822, 12030, 13233, 18045, 22055, 26466, 36090, 39699, 44110, 66165, 79398, 132330, 198495, 396990.

If you add them up, you will get the total of 397,721. Now subtract 396,990 to get 731,826