Q: What is the sum of all factors of the number 420,721,306 excluding 420,721,306?

 A: 210,360,656

Why is 210,360,656 the sum of all factors of 420,721,306, excluding 420,721,306?

The factors of the number 420,721,306 are: 1, 2, 210360653, 420721306.

If you add them up, you will get the total of 420,721,516. Now subtract 420,721,306 to get 210,360,656


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