Q: What is the sum of all factors of the number 427,978 excluding 427,978?

 A: 213,992

Why is 213,992 the sum of all factors of 427,978, excluding 427,978?

The factors of the number 427,978 are: 1, 2, 213989, 427978.

If you add them up, you will get the total of 428,191. Now subtract 427,978 to get 213,992


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