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

Why is 2,164,172 the sum of all factors of 900,400, including 900,400?

The factors of the number 900,400 are: 1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 50, 80, 100, 200, 400, 2251, 4502, 9004, 11255, 18008, 22510, 36016, 45020, 56275, 90040, 112550, 180080, 225100, 450200, 900400.

If you add them up, you will get the total of 2,164,172.

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