Q: What is the sum of all factors of the number 129,255 excluding 129,255?

 A: 107,289

Why is 107,289 the sum of all factors of 129,255, excluding 129,255?

The factors of the number 129,255 are: 1, 3, 5, 7, 15, 21, 35, 105, 1231, 3693, 6155, 8617, 18465, 25851, 43085, 129255.

If you add them up, you will get the total of 129,362. Now subtract 129,255 to get 107,289


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