Q: What is the sum of all factors of the number 356,421 excluding 356,421?
A: 199,899
The factors of the number 356,421 are: 1, 3, 13, 19, 37, 39, 57, 111, 169, 247, 481, 507, 703, 741, 1443, 2109, 3211, 6253, 9139, 9633, 18759, 27417, 118807, 356421.
If you add them up, you will get the total of 356,620. Now subtract 356,421 to get 199,899