Q: What is the sum of all factors of the number 1,287,620 including 1,287,620?
A: 2,704,044
The factors of the number 1,287,620 are: 1, 2, 4, 5, 10, 20, 64381, 128762, 257524, 321905, 643810, 1287620.
If you add them up, you will get the total of 2,704,044.