Q: What is the sum of all factors of the number 30,831 excluding 30,831?

 A: 11,409

Why is 11,409 the sum of all factors of 30,831, excluding 30,831?

The factors of the number 30,831 are: 1, 3, 43, 129, 239, 717, 10277, 30831.

If you add them up, you will get the total of 30,842. Now subtract 30,831 to get 11,409


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