Q: What is the sum of all factors of the number 243 excluding 243?

 A: 121

Why is 121 the sum of all factors of 243, excluding 243?

The factors of the number 243 are: 1, 3, 9, 27, 81, 243.

If you add them up, you will get the total of 364. Now subtract 243 to get 121


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