Q: What is the sum of all factors of the number 400,900 including 400,900?

Why is 920,080 the sum of all factors of 400,900, including 400,900?

The factors of the number 400,900 are: 1, 2, 4, 5, 10, 19, 20, 25, 38, 50, 76, 95, 100, 190, 211, 380, 422, 475, 844, 950, 1055, 1900, 2110, 4009, 4220, 5275, 8018, 10550, 16036, 20045, 21100, 40090, 80180, 100225, 200450, 400900.

If you add them up, you will get the total of 920,080.

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