Q: What is the sum of all factors of the number 287,405,639 excluding 287,405,639?

 A: 1

Why is 1 the sum of all factors of 287,405,639, excluding 287,405,639?

The factors of the number 287,405,639 are: 1, 287405639.

If you add them up, you will get the total of 287,405,640. Now subtract 287,405,639 to get 1


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