Q: What is the sum of all factors of the number 208,539 excluding 208,539?
A: 128,421
The factors of the number 208,539 are: 1, 3, 9, 17, 29, 47, 51, 87, 141, 153, 261, 423, 493, 799, 1363, 1479, 2397, 4089, 4437, 7191, 12267, 23171, 69513, 208539.
If you add them up, you will get the total of 208,667. Now subtract 208,539 to get 128,421