Q: What is the sum of all factors of the number 33,480 excluding 33,480?

A: 81,720

Why is 81,720 the sum of all factors of 33,480, excluding 33,480?

The factors of the number 33,480 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 31, 36, 40, 45, 54, 60, 62, 72, 90, 93, 108, 120, 124, 135, 155, 180, 186, 216, 248, 270, 279, 310, 360, 372, 465, 540, 558, 620, 744, 837, 930, 1080, 1116, 1240, 1395, 1674, 1860, 2232, 2790, 3348, 3720, 4185, 5580, 6696, 8370, 11160, 16740, 33480.

If you add them up, you will get the total of 33,561. Now subtract 33,480 to get 81,720