Q: What is the sum of all factors of the number 16,420 excluding 16,420?
A: 18,104
The factors of the number 16,420 are: 1, 2, 4, 5, 10, 20, 821, 1642, 3284, 4105, 8210, 16420.
If you add them up, you will get the total of 16,438. Now subtract 16,420 to get 18,104