Q: What is the sum of all factors of the number 28,305 excluding 28,305?

 A: 25,047

Why is 25,047 the sum of all factors of 28,305, excluding 28,305?

The factors of the number 28,305 are: 1, 3, 5, 9, 15, 17, 37, 45, 51, 85, 111, 153, 185, 255, 333, 555, 629, 765, 1665, 1887, 3145, 5661, 9435, 28305.

If you add them up, you will get the total of 28,330. Now subtract 28,305 to get 25,047


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