Q: What is the sum of all factors of the number 212,640 excluding 212,640?

A: 458,688

Why is 458,688 the sum of all factors of 212,640, excluding 212,640?

The factors of the number 212,640 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 443, 480, 886, 1329, 1772, 2215, 2658, 3544, 4430, 5316, 6645, 7088, 8860, 10632, 13290, 14176, 17720, 21264, 26580, 35440, 42528, 53160, 70880, 106320, 212640.

If you add them up, you will get the total of 213,098. Now subtract 212,640 to get 458,688