Q: What is the sum of all factors of the number 815,736 excluding 815,736?

Why is 1,275,864 the sum of all factors of 815,736, excluding 815,736?

The factors of the number 815,736 are: 1, 2, 3, 4, 6, 8, 12, 24, 41, 82, 123, 164, 246, 328, 492, 829, 984, 1658, 2487, 3316, 4974, 6632, 9948, 19896, 33989, 67978, 101967, 135956, 203934, 271912, 407868, 815736.

If you add them up, you will get the total of 815,737. Now subtract 815,736 to get 1,275,864

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