Q: What is the sum of all factors of the number 21,221,657 excluding 21,221,657?

 A: 1

Why is 1 the sum of all factors of 21,221,657, excluding 21,221,657?

The factors of the number 21,221,657 are: 1, 21221657.

If you add them up, you will get the total of 21,221,658. Now subtract 21,221,657 to get 1


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