Q: What is the sum of all factors of the number 105,720,255 excluding 105,720,255?

A: 83,089,665

Why is 83,089,665 the sum of all factors of 105,720,255, excluding 105,720,255?

The factors of the number 105,720,255 are: 1, 3, 5, 9, 15, 27, 45, 135, 233, 699, 1165, 2097, 3361, 3495, 6291, 10083, 10485, 16805, 30249, 31455, 50415, 90747, 151245, 453735, 783113, 2349339, 3915565, 7048017, 11746695, 21144051, 35240085, 105720255.

If you add them up, you will get the total of 105,720,338. Now subtract 105,720,255 to get 83,089,665