Q: What is the sum of all factors of the number 256,671 excluding 256,671?
A: 139,569
The factors of the number 256,671 are: 1, 3, 9, 19, 57, 79, 171, 237, 361, 711, 1083, 1501, 3249, 4503, 13509, 28519, 85557, 256671.
If you add them up, you will get the total of 256,810. Now subtract 256,671 to get 139,569