Q: What is the sum of all factors of the number 70,720 excluding 70,720?

A: 121,304

Why is 121,304 the sum of all factors of 70,720, excluding 70,720?

The factors of the number 70,720 are: 1, 2, 4, 5, 8, 10, 13, 16, 17, 20, 26, 32, 34, 40, 52, 64, 65, 68, 80, 85, 104, 130, 136, 160, 170, 208, 221, 260, 272, 320, 340, 416, 442, 520, 544, 680, 832, 884, 1040, 1088, 1105, 1360, 1768, 2080, 2210, 2720, 3536, 4160, 4420, 5440, 7072, 8840, 14144, 17680, 35360, 70720.

If you add them up, you will get the total of 70,841. Now subtract 70,720 to get 121,304