Q: What is the sum of all factors of the number 638,680 including 638,680?

Why is 1,643,040 the sum of all factors of 638,680, including 638,680?

The factors of the number 638,680 are: 1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 140, 280, 2281, 4562, 9124, 11405, 15967, 18248, 22810, 31934, 45620, 63868, 79835, 91240, 127736, 159670, 319340, 638680.

If you add them up, you will get the total of 1,643,040.

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