Why is 1,080 the sum of all factors of 440, including 440?
The factors of the number 440 are: 1, 2, 4, 5, 8, 10, 11, 20, 22, 40, 44, 55, 88, 110, 220, 440.
If you add them up, you will get the total of 1,080.
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