Q: What is the sum of all factors of the number 21,507,320 including 21,507,320?

Why is 49,079,520 the sum of all factors of 21,507,320, including 21,507,320?

The factors of the number 21,507,320 are: 1, 2, 4, 5, 8, 10, 20, 40, 71, 142, 284, 355, 568, 710, 1420, 2840, 7573, 15146, 30292, 37865, 60584, 75730, 151460, 302920, 537683, 1075366, 2150732, 2688415, 4301464, 5376830, 10753660, 21507320.

If you add them up, you will get the total of 49,079,520.

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