Q: What is the sum of all factors of the number 415,840 excluding 415,840?

A: 618,368

Why is 618,368 the sum of all factors of 415,840, excluding 415,840?

The factors of the number 415,840 are: 1, 2, 4, 5, 8, 10, 16, 20, 23, 32, 40, 46, 80, 92, 113, 115, 160, 184, 226, 230, 368, 452, 460, 565, 736, 904, 920, 1130, 1808, 1840, 2260, 2599, 3616, 3680, 4520, 5198, 9040, 10396, 12995, 18080, 20792, 25990, 41584, 51980, 83168, 103960, 207920, 415840.

If you add them up, you will get the total of 416,458. Now subtract 415,840 to get 618,368