Why is 2,178 the sum of all factors of 810, including 810?
The factors of the number 810 are: 1, 2, 3, 5, 6, 9, 10, 15, 18, 27, 30, 45, 54, 81, 90, 135, 162, 270, 405, 810.
If you add them up, you will get the total of 2,178.
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