Q: What is the sum of all factors of the number 257,643,289 excluding 257,643,289?

 A: 1

Why is 1 the sum of all factors of 257,643,289, excluding 257,643,289?

The factors of the number 257,643,289 are: 1, 257643289.

If you add them up, you will get the total of 257,643,290. Now subtract 257,643,289 to get 1


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