Q: What is the sum of all factors of the number 127,720 excluding 127,720?

 A: 171,800

Why is 171,800 the sum of all factors of 127,720, excluding 127,720?

The factors of the number 127,720 are: 1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 103, 124, 155, 206, 248, 310, 412, 515, 620, 824, 1030, 1240, 2060, 3193, 4120, 6386, 12772, 15965, 25544, 31930, 63860, 127720.

If you add them up, you will get the total of 127,891. Now subtract 127,720 to get 171,800


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