Q: What is the sum of all factors of the number 811,640 including 811,640?

Why is 1,853,280 the sum of all factors of 811,640, including 811,640?

The factors of the number 811,640 are: 1, 2, 4, 5, 8, 10, 20, 40, 103, 197, 206, 394, 412, 515, 788, 824, 985, 1030, 1576, 1970, 2060, 3940, 4120, 7880, 20291, 40582, 81164, 101455, 162328, 202910, 405820, 811640.

If you add them up, you will get the total of 1,853,280.

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