Q: What is the sum of all factors of the number 4,128,525 excluding 4,128,525?

Why is 3,415,635 the sum of all factors of 4,128,525, excluding 4,128,525?

The factors of the number 4,128,525 are: 1, 3, 5, 9, 15, 25, 45, 59, 75, 177, 225, 295, 311, 531, 885, 933, 1475, 1555, 2655, 2799, 4425, 4665, 7775, 13275, 13995, 18349, 23325, 55047, 69975, 91745, 165141, 275235, 458725, 825705, 1376175, 4128525.

If you add them up, you will get the total of 4,128,528. Now subtract 4,128,525 to get 3,415,635

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