Q: What is the sum of all factors of the number 257,621 excluding 257,621?
A: 78,379
The factors of the number 257,621 are: 1, 7, 13, 19, 91, 133, 149, 247, 1043, 1729, 1937, 2831, 13559, 19817, 36803, 257621.
If you add them up, you will get the total of 257,699. Now subtract 257,621 to get 78,379