Why is 2,880 the sum of all factors of 1,240, including 1,240?
The factors of the number 1,240 are: 1, 2, 4, 5, 8, 10, 20, 31, 40, 62, 124, 155, 248, 310, 620, 1240.
If you add them up, you will get the total of 2,880.
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