Q: What is the sum of all factors of the number 161,051,055 excluding 161,051,055?

A: 121,131,345

Why is 121,131,345 the sum of all factors of 161,051,055, excluding 161,051,055?

The factors of the number 161,051,055 are: 1, 3, 5, 11, 15, 33, 55, 165, 283, 849, 1415, 3113, 3449, 4245, 9339, 10347, 15565, 17245, 37939, 46695, 51735, 113817, 189695, 569085, 976067, 2928201, 4880335, 10736737, 14641005, 32210211, 53683685, 161051055.

If you add them up, you will get the total of 161,051,176. Now subtract 161,051,055 to get 121,131,345