Q: What is the sum of all factors of the number 203,820 excluding 203,820?

A: 387,540

Why is 387,540 the sum of all factors of 203,820, excluding 203,820?

The factors of the number 203,820 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 43, 60, 79, 86, 129, 158, 172, 215, 237, 258, 316, 395, 430, 474, 516, 645, 790, 860, 948, 1185, 1290, 1580, 2370, 2580, 3397, 4740, 6794, 10191, 13588, 16985, 20382, 33970, 40764, 50955, 67940, 101910, 203820.

If you add them up, you will get the total of 204,207. Now subtract 203,820 to get 387,540