Q: What is the sum of all factors of the number 28,455 excluding 28,455?

 A: 23,769

Why is 23,769 the sum of all factors of 28,455, excluding 28,455?

The factors of the number 28,455 are: 1, 3, 5, 7, 15, 21, 35, 105, 271, 813, 1355, 1897, 4065, 5691, 9485, 28455.

If you add them up, you will get the total of 28,478. Now subtract 28,455 to get 23,769


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