Q: What is the sum of all factors of the number 505,445,421 excluding 505,445,421?

 A: 243,736,019

Why is 243,736,019 the sum of all factors of 505,445,421, excluding 505,445,421?

The factors of the number 505,445,421 are: 1, 3, 13, 31, 39, 93, 403, 1209, 418069, 1254207, 5434897, 12960139, 16304691, 38880417, 168481807, 505445421.

If you add them up, you will get the total of 505,445,664. Now subtract 505,445,421 to get 243,736,019


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