Q: What is the sum of all factors of the number 640,427 excluding 640,427?

 A: 4,093

Why is 4,093 the sum of all factors of 640,427, excluding 640,427?

The factors of the number 640,427 are: 1, 163, 3929, 640427.

If you add them up, you will get the total of 640,431. Now subtract 640,427 to get 4,093


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