Q: What is the sum of all factors of the number 15,721,217 excluding 15,721,217?

 A: 1

Why is 1 the sum of all factors of 15,721,217, excluding 15,721,217?

The factors of the number 15,721,217 are: 1, 15721217.

If you add them up, you will get the total of 15,721,218. Now subtract 15,721,217 to get 1


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