Q: What is the sum of all factors of the number 838,840 including 838,840?

Why is 1,921,680 the sum of all factors of 838,840, including 838,840?

The factors of the number 838,840 are: 1, 2, 4, 5, 8, 10, 20, 40, 67, 134, 268, 313, 335, 536, 626, 670, 1252, 1340, 1565, 2504, 2680, 3130, 6260, 12520, 20971, 41942, 83884, 104855, 167768, 209710, 419420, 838840.

If you add them up, you will get the total of 1,921,680.

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