Q: What is the sum of all factors of the number 640,436 excluding 640,436?

 A: 519,184

Why is 519,184 the sum of all factors of 640,436, excluding 640,436?

The factors of the number 640,436 are: 1, 2, 4, 29, 58, 116, 5521, 11042, 22084, 160109, 320218, 640436.

If you add them up, you will get the total of 640,955. Now subtract 640,436 to get 519,184


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