Q: What is the sum of all factors of the number 401,001,321 excluding 401,001,321?

A: 259,785,879

Why is 259,785,879 the sum of all factors of 401,001,321, excluding 401,001,321?

The factors of the number 401,001,321 are: 1, 3, 7, 17, 21, 47, 51, 119, 141, 329, 357, 799, 987, 2397, 5593, 16779, 23899, 71697, 167293, 406283, 501879, 1123253, 1218849, 2843981, 3369759, 7862771, 8531943, 19095301, 23588313, 57285903, 133667107, 401001321.

If you add them up, you will get the total of 401,001,580. Now subtract 401,001,321 to get 259,785,879