Q: What is the sum of all factors of the number 21,016,145 excluding 21,016,145?

 A: 4,203,235

Why is 4,203,235 the sum of all factors of 21,016,145, excluding 21,016,145?

The factors of the number 21,016,145 are: 1, 5, 4203229, 21016145.

If you add them up, you will get the total of 21,016,149. Now subtract 21,016,145 to get 4,203,235


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