Q: What is the sum of all factors of the number 857,560 excluding 857,560?

Why is 1,248,440 the sum of all factors of 857,560, excluding 857,560?

The factors of the number 857,560 are: 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440, 1949, 3898, 7796, 9745, 15592, 19490, 21439, 38980, 42878, 77960, 85756, 107195, 171512, 214390, 428780, 857560.

If you add them up, you will get the total of 857,561. Now subtract 857,560 to get 1,248,440

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