Q: What is the sum of all factors of the number 640,135 excluding 640,135?

 A: 177,713

Why is 177,713 the sum of all factors of 640,135, excluding 640,135?

The factors of the number 640,135 are: 1, 5, 17, 85, 289, 443, 1445, 2215, 7531, 37655, 128027, 640135.

If you add them up, you will get the total of 640,312. Now subtract 640,135 to get 177,713


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