Why is 3,168 the sum of all factors of 1,290, including 1,290?
The factors of the number 1,290 are: 1, 2, 3, 5, 6, 10, 15, 30, 43, 86, 129, 215, 258, 430, 645, 1290.
If you add them up, you will get the total of 3,168.
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