Why is 1,530 the sum of all factors of 640, including 640?
The factors of the number 640 are: 1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 128, 160, 320, 640.
If you add them up, you will get the total of 1,530.
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