Q: What is the sum of all factors of the number 40,128 excluding 40,128?

A: 81,792

Why is 81,792 the sum of all factors of 40,128, excluding 40,128?

The factors of the number 40,128 are: 1, 2, 3, 4, 6, 8, 11, 12, 16, 19, 22, 24, 32, 33, 38, 44, 48, 57, 64, 66, 76, 88, 96, 114, 132, 152, 176, 192, 209, 228, 264, 304, 352, 418, 456, 528, 608, 627, 704, 836, 912, 1056, 1216, 1254, 1672, 1824, 2112, 2508, 3344, 3648, 5016, 6688, 10032, 13376, 20064, 40128.

If you add them up, you will get the total of 40,209. Now subtract 40,128 to get 81,792