Q: What is the sum of all factors of the number 420,405,645 excluding 420,405,645?

 A: 313,393,587

Why is 313,393,587 the sum of all factors of 420,405,645, excluding 420,405,645?

The factors of the number 420,405,645 are: 1, 3, 5, 11, 15, 33, 55, 165, 2547913, 7643739, 12739565, 28027043, 38218695, 84081129, 140135215, 420405645.

If you add them up, you will get the total of 420,405,958. Now subtract 420,405,645 to get 313,393,587


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