Q: What is the sum of all factors of the number 21,557,990 excluding 21,557,990?

 A: 17,246,410

Why is 17,246,410 the sum of all factors of 21,557,990, excluding 21,557,990?

The factors of the number 21,557,990 are: 1, 2, 5, 10, 2155799, 4311598, 10778995, 21557990.

If you add them up, you will get the total of 21,558,007. Now subtract 21,557,990 to get 17,246,410


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