Q: What is the sum of all factors of the number 280,720 excluding 280,720?

A: 461,420

Why is 461,420 the sum of all factors of 280,720, excluding 280,720?

The factors of the number 280,720 are: 1, 2, 4, 5, 8, 10, 11, 16, 20, 22, 29, 40, 44, 55, 58, 80, 88, 110, 116, 121, 145, 176, 220, 232, 242, 290, 319, 440, 464, 484, 580, 605, 638, 880, 968, 1160, 1210, 1276, 1595, 1936, 2320, 2420, 2552, 3190, 3509, 4840, 5104, 6380, 7018, 9680, 12760, 14036, 17545, 25520, 28072, 35090, 56144, 70180, 140360, 280720.

If you add them up, you will get the total of 281,181. Now subtract 280,720 to get 461,420