Q: What is the sum of all factors of the number 21,243,316 excluding 21,243,316?

 A: 15,981,872

Why is 15,981,872 the sum of all factors of 21,243,316, excluding 21,243,316?

The factors of the number 21,243,316 are: 1, 2, 4, 857, 1714, 3428, 6197, 12394, 24788, 5310829, 10621658, 21243316.

If you add them up, you will get the total of 21,243,331. Now subtract 21,243,316 to get 15,981,872


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