Q: What is the sum of all factors of the number 405,730,009 excluding 405,730,009?

 A: 21,885,991

Why is 21,885,991 the sum of all factors of 405,730,009, excluding 405,730,009?

The factors of the number 405,730,009 are: 1, 19, 829, 15751, 25759, 489421, 21354211, 405730009.

If you add them up, you will get the total of 405,730,030. Now subtract 405,730,009 to get 21,885,991


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