Q: What is the sum of all factors of the number 815,721,142 excluding 815,721,142?

 A: 408,307,658

Why is 408,307,658 the sum of all factors of 815,721,142, excluding 815,721,142?

The factors of the number 815,721,142 are: 1, 2, 2789, 5578, 146239, 292478, 407860571, 815721142.

If you add them up, you will get the total of 815,721,550. Now subtract 815,721,142 to get 408,307,658


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