Q: What is the sum of all factors of the number 401,890 excluding 401,890?
A: 321,530
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