Q: What is the sum of all factors of the number 387,820 excluding 387,820?
A: 426,644
The factors of the number 387,820 are: 1, 2, 4, 5, 10, 20, 19391, 38782, 77564, 96955, 193910, 387820.
If you add them up, you will get the total of 388,246. Now subtract 387,820 to get 426,644