Q: What is the sum of all factors of the number 81,420 excluding 81,420?

A: 160,500

Why is 160,500 the sum of all factors of 81,420, excluding 81,420?

The factors of the number 81,420 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 23, 30, 46, 59, 60, 69, 92, 115, 118, 138, 177, 230, 236, 276, 295, 345, 354, 460, 590, 690, 708, 885, 1180, 1357, 1380, 1770, 2714, 3540, 4071, 5428, 6785, 8142, 13570, 16284, 20355, 27140, 40710, 81420.

If you add them up, you will get the total of 81,580. Now subtract 81,420 to get 160,500