Q: What is the sum of all factors of the number 291,400 excluding 291,400?

A: 422,840

Why is 422,840 the sum of all factors of 291,400, excluding 291,400?

The factors of the number 291,400 are: 1, 2, 4, 5, 8, 10, 20, 25, 31, 40, 47, 50, 62, 94, 100, 124, 155, 188, 200, 235, 248, 310, 376, 470, 620, 775, 940, 1175, 1240, 1457, 1550, 1880, 2350, 2914, 3100, 4700, 5828, 6200, 7285, 9400, 11656, 14570, 29140, 36425, 58280, 72850, 145700, 291400.

If you add them up, you will get the total of 291,822. Now subtract 291,400 to get 422,840