Why is 523 the sum of all factors of 324, excluding 324?
The factors of the number 324 are: 1, 2, 3, 4, 6, 9, 12, 18, 27, 36, 54, 81, 108, 162, 324.
If you add them up, you will get the total of 847. Now subtract 324 to get 523
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