Q: What is the sum of all factors of the number 405,620,421 excluding 405,620,421?

 A: 152,464,827

Why is 152,464,827 the sum of all factors of 405,620,421, excluding 405,620,421?

The factors of the number 405,620,421 are: 1, 3, 41, 123, 137, 411, 5617, 16851, 24071, 72213, 986911, 2960733, 3297727, 9893181, 135206807, 405620421.

If you add them up, you will get the total of 405,620,573. Now subtract 405,620,421 to get 152,464,827


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