Q: What is the sum of all factors of the number 155,220 excluding 155,220?

A: 315,180

Why is 315,180 the sum of all factors of 155,220, excluding 155,220?

The factors of the number 155,220 are: 1, 2, 3, 4, 5, 6, 10, 12, 13, 15, 20, 26, 30, 39, 52, 60, 65, 78, 130, 156, 195, 199, 260, 390, 398, 597, 780, 796, 995, 1194, 1990, 2388, 2587, 2985, 3980, 5174, 5970, 7761, 10348, 11940, 12935, 15522, 25870, 31044, 38805, 51740, 77610, 155220.

If you add them up, you will get the total of 155,535. Now subtract 155,220 to get 315,180