Q: What is the sum of all factors of the number 401,720,415 excluding 401,720,415?

A: 277,107,105

Why is 277,107,105 the sum of all factors of 401,720,415, excluding 401,720,415?

The factors of the number 401,720,415 are: 1, 3, 5, 15, 23, 69, 83, 115, 249, 345, 415, 1245, 1909, 5727, 9545, 14029, 28635, 42087, 70145, 210435, 322667, 968001, 1164407, 1613335, 3493221, 4840005, 5822035, 17466105, 26781361, 80344083, 133906805, 401720415.

If you add them up, you will get the total of 401,720,692. Now subtract 401,720,415 to get 277,107,105