Q: What is the sum of all factors of the number 640,455 excluding 640,455?
A: 384,297
The factors of the number 640,455 are: 1, 3, 5, 15, 42697, 128091, 213485, 640455.
If you add them up, you will get the total of 640,839. Now subtract 640,455 to get 384,297