Q: What is the sum of all factors of the number 420,780 excluding 420,780?

 A: 757,572

Why is 757,572 the sum of all factors of 420,780, excluding 420,780?

The factors of the number 420,780 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 30, 60, 7013, 14026, 21039, 28052, 35065, 42078, 70130, 84156, 105195, 140260, 210390, 420780.

If you add them up, you will get the total of 421,537. Now subtract 420,780 to get 757,572


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