Q: What is the sum of all factors of the number 72,540 excluding 72,540?

A: 172,068

Why is 172,068 the sum of all factors of 72,540, excluding 72,540?

The factors of the number 72,540 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 13, 15, 18, 20, 26, 30, 31, 36, 39, 45, 52, 60, 62, 65, 78, 90, 93, 117, 124, 130, 155, 156, 180, 186, 195, 234, 260, 279, 310, 372, 390, 403, 465, 468, 558, 585, 620, 780, 806, 930, 1116, 1170, 1209, 1395, 1612, 1860, 2015, 2340, 2418, 2790, 3627, 4030, 4836, 5580, 6045, 7254, 8060, 12090, 14508, 18135, 24180, 36270, 72540.

If you add them up, you will get the total of 72,712. Now subtract 72,540 to get 172,068