Q: What is the sum of all factors of the number 1,220,420 excluding 1,220,420?
A: 1,366,780
The factors of the number 1,220,420 are: 1, 2, 4, 5, 10, 20, 139, 278, 439, 556, 695, 878, 1390, 1756, 2195, 2780, 4390, 8780, 61021, 122042, 244084, 305105, 610210, 1220420.
If you add them up, you will get the total of 1,220,421. Now subtract 1,220,420 to get 1,366,780