Q: What is the sum of all factors of the number 12,721,987 excluding 12,721,987?

 A: 78,213

Why is 78,213 the sum of all factors of 12,721,987, excluding 12,721,987?

The factors of the number 12,721,987 are: 1, 163, 78049, 12721987.

If you add them up, you will get the total of 12,722,065. Now subtract 12,721,987 to get 78,213


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