Q: What is the sum of all factors of the number 18,978 excluding 18,978?

 A: 18,990

Why is 18,990 the sum of all factors of 18,978, excluding 18,978?

The factors of the number 18,978 are: 1, 2, 3, 6, 3163, 6326, 9489, 18978.

If you add them up, you will get the total of 18,996. Now subtract 18,978 to get 18,990


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