Q: What is the sum of all factors of the number 640,131 excluding 640,131?

 A: 217,149

Why is 217,149 the sum of all factors of 640,131, excluding 640,131?

The factors of the number 640,131 are: 1, 3, 379, 563, 1137, 1689, 213377, 640131.

If you add them up, you will get the total of 640,348. Now subtract 640,131 to get 217,149


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