Q: What is the sum of all factors of the number 72,480 excluding 72,480?

A: 157,344

Why is 157,344 the sum of all factors of 72,480, excluding 72,480?

The factors of the number 72,480 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 151, 160, 240, 302, 453, 480, 604, 755, 906, 1208, 1510, 1812, 2265, 2416, 3020, 3624, 4530, 4832, 6040, 7248, 9060, 12080, 14496, 18120, 24160, 36240, 72480.

If you add them up, you will get the total of 72,637. Now subtract 72,480 to get 157,344