Q: What is the sum of all factors of the number 128,625 excluding 128,625?

 A: 120,975

Why is 120,975 the sum of all factors of 128,625, excluding 128,625?

The factors of the number 128,625 are: 1, 3, 5, 7, 15, 21, 25, 35, 49, 75, 105, 125, 147, 175, 245, 343, 375, 525, 735, 875, 1029, 1225, 1715, 2625, 3675, 5145, 6125, 8575, 18375, 25725, 42875, 128625.

If you add them up, you will get the total of 128,745. Now subtract 128,625 to get 120,975


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