Q: What is the sum of all factors of the number 135,540 excluding 135,540?

A: 287,820

Why is 287,820 the sum of all factors of 135,540, excluding 135,540?

The factors of the number 135,540 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 27, 30, 36, 45, 54, 60, 90, 108, 135, 180, 251, 270, 502, 540, 753, 1004, 1255, 1506, 2259, 2510, 3012, 3765, 4518, 5020, 6777, 7530, 9036, 11295, 13554, 15060, 22590, 27108, 33885, 45180, 67770, 135540.

If you add them up, you will get the total of 135,827. Now subtract 135,540 to get 287,820