Q: What is the sum of all factors of the number 387,391 excluding 387,391?

 A: 20,409

Why is 20,409 the sum of all factors of 387,391, excluding 387,391?

The factors of the number 387,391 are: 1, 19, 20389, 387391.

If you add them up, you will get the total of 387,411. Now subtract 387,391 to get 20,409


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