Why is 54,180 the sum of all factors of 25,780, including 25,780?
The factors of the number 25,780 are: 1, 2, 4, 5, 10, 20, 1289, 2578, 5156, 6445, 12890, 25780.
If you add them up, you will get the total of 54,180.
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