Q: What is the sum of all factors of the number 66,978 excluding 66,978?

A: 80,559

Why is 80,559 the sum of all factors of 66,978, excluding 66,978?

The factors of the number 66,978 are: 1, 2, 3, 6, 9, 18, 61, 122, 183, 366, 549, 1098, 3721, 7442, 11163, 22326, 33489, 66978.

If you add them up, you will get the total of 67,058. Now subtract 66,978 to get 80,559

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