Q: What is the sum of all factors of the number 401,890 excluding 401,890?

 A: 321,530

Why is 321,530 the sum of all factors of 401,890, excluding 401,890?

The factors of the number 401,890 are: 1, 2, 5, 10, 40189, 80378, 200945, 401890.

If you add them up, you will get the total of 402,211. Now subtract 401,890 to get 321,530


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