Q: What is the sum of all factors of the number 257,434 excluding 257,434?

 A: 128,720

Why is 128,720 the sum of all factors of 257,434, excluding 257,434?

The factors of the number 257,434 are: 1, 2, 128717, 257434.

If you add them up, you will get the total of 257,562. Now subtract 257,434 to get 128,720


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