Q: What is the sum of all factors of the number 831,520 excluding 831,520?

Why is 1,133,324 the sum of all factors of 831,520, excluding 831,520?

The factors of the number 831,520 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 80, 160, 5197, 10394, 20788, 25985, 41576, 51970, 83152, 103940, 166304, 207880, 415760, 831520.

If you add them up, you will get the total of 831,521. Now subtract 831,520 to get 1,133,324

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