Q: What is the sum of all factors of the number 640,869 excluding 640,869?

 A: 213,627

Why is 213,627 the sum of all factors of 640,869, excluding 640,869?

The factors of the number 640,869 are: 1, 3, 213623, 640869.

If you add them up, you will get the total of 641,082. Now subtract 640,869 to get 213,627


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