Q: What is the sum of all factors of the number 21,138,764 excluding 21,138,764?
A: 15,999,820
The factors of the number 21,138,764 are: 1, 2, 4, 257, 514, 1028, 20563, 41126, 82252, 5284691, 10569382, 21138764.
If you add them up, you will get the total of 21,138,779. Now subtract 21,138,764 to get 15,999,820