Q: What is the sum of all factors of the number 77,130 excluding 77,130?

 A: 123,642

Why is 123,642 the sum of all factors of 77,130, excluding 77,130?

The factors of the number 77,130 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90, 857, 1714, 2571, 4285, 5142, 7713, 8570, 12855, 15426, 25710, 38565, 77130.

If you add them up, you will get the total of 77,253. Now subtract 77,130 to get 123,642


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