Q: What is the sum of all factors of the number 83,220 excluding 83,220?

A: 165,420

Why is 165,420 the sum of all factors of 83,220, excluding 83,220?

The factors of the number 83,220 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 19, 20, 30, 38, 57, 60, 73, 76, 95, 114, 146, 190, 219, 228, 285, 292, 365, 380, 438, 570, 730, 876, 1095, 1140, 1387, 1460, 2190, 2774, 4161, 4380, 5548, 6935, 8322, 13870, 16644, 20805, 27740, 41610, 83220.

If you add them up, you will get the total of 83,385. Now subtract 83,220 to get 165,420