Q: What is the sum of all factors of the number 128,978 excluding 128,978?

 A: 64,492

Why is 64,492 the sum of all factors of 128,978, excluding 128,978?

The factors of the number 128,978 are: 1, 2, 64489, 128978.

If you add them up, you will get the total of 129,042. Now subtract 128,978 to get 64,492


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