Q: What is the sum of all factors of the number 2,457 excluding 2,457?

A: 2,023

Why is 2,023 the sum of all factors of 2,457, excluding 2,457?

The factors of the number 2,457 are: 1, 3, 7, 9, 13, 21, 27, 39, 63, 91, 117, 189, 273, 351, 819, 2457.

If you add them up, you will get the total of 2,459. Now subtract 2,457 to get 2,023

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