Q: What is the sum of all factors of the number 661,830 excluding 661,830?

Why is 1,049,754 the sum of all factors of 661,830, excluding 661,830?

The factors of the number 661,830 are: 1, 2, 3, 5, 6, 10, 13, 15, 26, 30, 39, 65, 78, 130, 195, 390, 1697, 3394, 5091, 8485, 10182, 16970, 22061, 25455, 44122, 50910, 66183, 110305, 132366, 220610, 330915, 661830.

If you add them up, you will get the total of 661,831. Now subtract 661,830 to get 1,049,754

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