Q: What is the sum of all factors of the number 641,421 excluding 641,421?
A: 465,139
The factors of the number 641,421 are: 1, 3, 9, 11, 19, 31, 33, 57, 93, 99, 121, 171, 209, 279, 341, 363, 589, 627, 1023, 1089, 1767, 1881, 2299, 3069, 3751, 5301, 6479, 6897, 11253, 19437, 20691, 33759, 58311, 71269, 213807, 641421.
If you add them up, you will get the total of 641,886. Now subtract 641,421 to get 465,139