Q: What is the sum of all factors of the number 20,280 excluding 20,280?

A: 45,600

Why is 45,600 the sum of all factors of 20,280, excluding 20,280?

The factors of the number 20,280 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 13, 15, 20, 24, 26, 30, 39, 40, 52, 60, 65, 78, 104, 120, 130, 156, 169, 195, 260, 312, 338, 390, 507, 520, 676, 780, 845, 1014, 1352, 1560, 1690, 2028, 2535, 3380, 4056, 5070, 6760, 10140, 20280.

If you add them up, you will get the total of 20,325. Now subtract 20,280 to get 45,600