Q: What is the sum of all factors of the number 180,720 excluding 180,720?

A: 428,616

Why is 428,616 the sum of all factors of 180,720, excluding 180,720?

The factors of the number 180,720 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 251, 360, 502, 720, 753, 1004, 1255, 1506, 2008, 2259, 2510, 3012, 3765, 4016, 4518, 5020, 6024, 7530, 9036, 10040, 11295, 12048, 15060, 18072, 20080, 22590, 30120, 36144, 45180, 60240, 90360, 180720.

If you add them up, you will get the total of 181,148. Now subtract 180,720 to get 428,616