Q: What is the sum of all factors of the number 648 excluding 648?

 A: 1,167

Why is 1,167 the sum of all factors of 648, excluding 648?

The factors of the number 648 are: 1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 27, 36, 54, 72, 81, 108, 162, 216, 324, 648.

If you add them up, you will get the total of 649. Now subtract 648 to get 1,167


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