Q: What is the sum of all factors of the number 840,255 including 840,255?

Why is 1,505,280 the sum of all factors of 840,255, including 840,255?

The factors of the number 840,255 are: 1, 3, 5, 13, 15, 31, 39, 65, 93, 139, 155, 195, 403, 417, 465, 695, 1209, 1807, 2015, 2085, 4309, 5421, 6045, 9035, 12927, 21545, 27105, 56017, 64635, 168051, 280085, 840255.

If you add them up, you will get the total of 1,505,280.

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