Q: What is the sum of all factors of the number 15,090 excluding 15,090?

A: 21,198

Why is 21,198 the sum of all factors of 15,090, excluding 15,090?

The factors of the number 15,090 are: 1, 2, 3, 5, 6, 10, 15, 30, 503, 1006, 1509, 2515, 3018, 5030, 7545, 15090.

If you add them up, you will get the total of 15,111. Now subtract 15,090 to get 21,198

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