Q: What is the sum of all factors of the number 640,057,069 excluding 640,057,069?

 A: 1

Why is 1 the sum of all factors of 640,057,069, excluding 640,057,069?

The factors of the number 640,057,069 are: 1, 640057069.

If you add them up, you will get the total of 640,057,070. Now subtract 640,057,069 to get 1


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