Q: What is the sum of all factors of the number 421,130,420 excluding 421,130,420?

 A: 463,861,324

Why is 463,861,324 the sum of all factors of 421,130,420, excluding 421,130,420?

The factors of the number 421,130,420 are: 1, 2, 4, 5, 10, 20, 1607, 3214, 6428, 8035, 13103, 16070, 26206, 32140, 52412, 65515, 131030, 262060, 21056521, 42113042, 84226084, 105282605, 210565210, 421130420.

If you add them up, you will get the total of 421,130,883. Now subtract 421,130,420 to get 463,861,324


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