Q: What is the sum of all factors of the number 872,406 excluding 872,406?

Why is 1,129,698 the sum of all factors of 872,406, excluding 872,406?

The factors of the number 872,406 are: 1, 2, 3, 6, 9, 17, 18, 34, 51, 102, 153, 306, 2851, 5702, 8553, 17106, 25659, 48467, 51318, 96934, 145401, 290802, 436203, 872406.

If you add them up, you will get the total of 872,407. Now subtract 872,406 to get 1,129,698

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