Q: What is the sum of all factors of the number 20,306 excluding 20,306?

 A: 15,982

Why is 15,982 the sum of all factors of 20,306, excluding 20,306?

The factors of the number 20,306 are: 1, 2, 11, 13, 22, 26, 71, 142, 143, 286, 781, 923, 1562, 1846, 10153, 20306.

If you add them up, you will get the total of 20,321. Now subtract 20,306 to get 15,982


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