Q: What is the sum of all factors of the number 89,980 excluding 89,980?

 A: 116,660

Why is 116,660 the sum of all factors of 89,980, excluding 89,980?

The factors of the number 89,980 are: 1, 2, 4, 5, 10, 11, 20, 22, 44, 55, 110, 220, 409, 818, 1636, 2045, 4090, 4499, 8180, 8998, 17996, 22495, 44990, 89980.

If you add them up, you will get the total of 90,096. Now subtract 89,980 to get 116,660


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