Q: What is the sum of all factors of the number 17,820 excluding 17,820?

A: 43,164

Why is 43,164 the sum of all factors of 17,820, excluding 17,820?

The factors of the number 17,820 are: 1, 2, 3, 4, 5, 6, 9, 10, 11, 12, 15, 18, 20, 22, 27, 30, 33, 36, 44, 45, 54, 55, 60, 66, 81, 90, 99, 108, 110, 132, 135, 162, 165, 180, 198, 220, 270, 297, 324, 330, 396, 405, 495, 540, 594, 660, 810, 891, 990, 1188, 1485, 1620, 1782, 1980, 2970, 3564, 4455, 5940, 8910, 17820.

If you add them up, you will get the total of 17,863. Now subtract 17,820 to get 43,164