Q: What is the sum of all factors of the number 107,280 excluding 107,280?

A: 255,420

Why is 255,420 the sum of all factors of 107,280, excluding 107,280?

The factors of the number 107,280 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, 149, 180, 240, 298, 360, 447, 596, 720, 745, 894, 1192, 1341, 1490, 1788, 2235, 2384, 2682, 2980, 3576, 4470, 5364, 5960, 6705, 7152, 8940, 10728, 11920, 13410, 17880, 21456, 26820, 35760, 53640, 107280.

If you add them up, you will get the total of 107,535. Now subtract 107,280 to get 255,420