Q: What is the sum of all factors of the number 1,455 excluding 1,455?

 A: 897

Why is 897 the sum of all factors of 1,455, excluding 1,455?

The factors of the number 1,455 are: 1, 3, 5, 15, 97, 291, 485, 1455.

If you add them up, you will get the total of 2,352. Now subtract 1,455 to get 897


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