Q: What is the sum of all factors of the number 11,780 excluding 11,780?

A: 15,100

Why is 15,100 the sum of all factors of 11,780, excluding 11,780?

The factors of the number 11,780 are: 1, 2, 4, 5, 10, 19, 20, 31, 38, 62, 76, 95, 124, 155, 190, 310, 380, 589, 620, 1178, 2356, 2945, 5890, 11780.

If you add them up, you will get the total of 11,795. Now subtract 11,780 to get 15,100

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