Q: What is the sum of all factors of the number 128,009 excluding 128,009?

 A: 18,295

Why is 18,295 the sum of all factors of 128,009, excluding 128,009?

The factors of the number 128,009 are: 1, 7, 18287, 128009.

If you add them up, you will get the total of 128,027. Now subtract 128,009 to get 18,295


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