Q: What is the sum of all factors of the number 212,100,400 excluding 212,100,400?

Why is 297,471,772 the sum of all factors of 212,100,400, excluding 212,100,400?

The factors of the number 212,100,400 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 530251, 1060502, 2121004, 2651255, 4242008, 5302510, 8484016, 10605020, 13256275, 21210040, 26512550, 42420080, 53025100, 106050200, 212100400.

If you add them up, you will get the total of 212,100,697. Now subtract 212,100,400 to get 297,471,772

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