Q: What is the sum of all factors of the number 420,040 excluding 420,040?
A: 525,140
The factors of the number 420,040 are: 1, 2, 4, 5, 8, 10, 20, 40, 10501, 21002, 42004, 52505, 84008, 105010, 210020, 420040.
If you add them up, you will get the total of 420,565. Now subtract 420,040 to get 525,140