Q: What is the sum of all factors of the number 127,780 excluding 127,780?

A: 140,600

Why is 140,600 the sum of all factors of 127,780, excluding 127,780?

The factors of the number 127,780 are: 1, 2, 4, 5, 10, 20, 6389, 12778, 25556, 31945, 63890, 127780.

If you add them up, you will get the total of 127,920. Now subtract 127,780 to get 140,600

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