Q: What is the sum of all factors of the number 312,400 excluding 312,400?

A: 517,904

Why is 517,904 the sum of all factors of 312,400, excluding 312,400?

The factors of the number 312,400 are: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 25, 40, 44, 50, 55, 71, 80, 88, 100, 110, 142, 176, 200, 220, 275, 284, 355, 400, 440, 550, 568, 710, 781, 880, 1100, 1136, 1420, 1562, 1775, 2200, 2840, 3124, 3550, 3905, 4400, 5680, 6248, 7100, 7810, 12496, 14200, 15620, 19525, 28400, 31240, 39050, 62480, 78100, 156200, 312400.

If you add them up, you will get the total of 312,917. Now subtract 312,400 to get 517,904