Q: What is the sum of all factors of the number 725,625 excluding 725,625?

A: 648,935

Why is 648,935 the sum of all factors of 725,625, excluding 725,625?

The factors of the number 725,625 are: 1, 3, 5, 9, 15, 25, 27, 43, 45, 75, 125, 129, 135, 215, 225, 375, 387, 625, 645, 675, 1075, 1125, 1161, 1875, 1935, 3225, 3375, 5375, 5625, 5805, 9675, 16125, 16875, 26875, 29025, 48375, 80625, 145125, 241875, 725625.

If you add them up, you will get the total of 726,273. Now subtract 725,625 to get 648,935