Q: What is the sum of all factors of the number 1,371,780 including 1,371,780?

Why is 4,161,612 the sum of all factors of 1,371,780, including 1,371,780?

The factors of the number 1,371,780 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, 180, 7621, 15242, 22863, 30484, 38105, 45726, 68589, 76210, 91452, 114315, 137178, 152420, 228630, 274356, 342945, 457260, 685890, 1371780.

If you add them up, you will get the total of 4,161,612.

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