Q: What is the sum of all factors of the number 21,186 excluding 21,186?

 A: 29,358

Why is 29,358 the sum of all factors of 21,186, excluding 21,186?

The factors of the number 21,186 are: 1, 2, 3, 6, 9, 11, 18, 22, 33, 66, 99, 107, 198, 214, 321, 642, 963, 1177, 1926, 2354, 3531, 7062, 10593, 21186.

If you add them up, you will get the total of 21,215. Now subtract 21,186 to get 29,358


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