Q: What is the sum of all factors of the number 101,780 excluding 101,780?

 A: 142,828

Why is 142,828 the sum of all factors of 101,780, excluding 101,780?

The factors of the number 101,780 are: 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 727, 1454, 2908, 3635, 5089, 7270, 10178, 14540, 20356, 25445, 50890, 101780.

If you add them up, you will get the total of 101,922. Now subtract 101,780 to get 142,828


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