Q: What is the sum of all factors of the number 30,805 excluding 30,805?

 A: 7,139

Why is 7,139 the sum of all factors of 30,805, excluding 30,805?

The factors of the number 30,805 are: 1, 5, 61, 101, 305, 505, 6161, 30805.

If you add them up, you will get the total of 30,812. Now subtract 30,805 to get 7,139


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