Q: What is the sum of all factors of the number 42,720 excluding 42,720?

A: 93,360

Why is 93,360 the sum of all factors of 42,720, excluding 42,720?

The factors of the number 42,720 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 89, 96, 120, 160, 178, 240, 267, 356, 445, 480, 534, 712, 890, 1068, 1335, 1424, 1780, 2136, 2670, 2848, 3560, 4272, 5340, 7120, 8544, 10680, 14240, 21360, 42720.

If you add them up, you will get the total of 42,813. Now subtract 42,720 to get 93,360