Q: What is the sum of all factors of the number 999,840 excluding 999,840?

A: 2,151,168

Why is 2,151,168 the sum of all factors of 999,840, excluding 999,840?

The factors of the number 999,840 are: 1, 2, 3, 4, 5, 6, 8, 10, 12, 15, 16, 20, 24, 30, 32, 40, 48, 60, 80, 96, 120, 160, 240, 480, 2083, 4166, 6249, 8332, 10415, 12498, 16664, 20830, 24996, 31245, 33328, 41660, 49992, 62490, 66656, 83320, 99984, 124980, 166640, 199968, 249960, 333280, 499920, 999840.

If you add them up, you will get the total of 999,842. Now subtract 999,840 to get 2,151,168