Why is 820 the sum of all factors of 704, excluding 704?
The factors of the number 704 are: 1, 2, 4, 8, 11, 16, 22, 32, 44, 64, 88, 176, 352, 704.
If you add them up, you will get the total of 1,524. Now subtract 704 to get 820
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