Q: What is the sum of all factors of the number 128,780 including 128,780?
A: 278,208
The factors of the number 128,780 are: 1, 2, 4, 5, 10, 20, 47, 94, 137, 188, 235, 274, 470, 548, 685, 940, 1370, 2740, 6439, 12878, 25756, 32195, 64390, 128780.
If you add them up, you will get the total of 278,208.