Q: What is the sum of all factors of the number 678,660 excluding 678,660?

 A: 1,221,756

Why is 1,221,756 the sum of all factors of 678,660, excluding 678,660?

The factors of the number 678,660 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 11311, 22622, 33933, 45244, 56555, 67866, 113110, 135732, 169665, 226220, 339330, 678660.

If you add them up, you will get the total of 678,661. Now subtract 678,660 to get 1,221,756


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