Q: What is the sum of all factors of the number 211,320,615 excluding 211,320,615?

A: 158,317,017

Why is 158,317,017 the sum of all factors of 211,320,615, excluding 211,320,615?

The factors of the number 211,320,615 are: 1, 3, 5, 11, 15, 33, 55, 165, 601, 1803, 2131, 3005, 6393, 6611, 9015, 10655, 19833, 23441, 31965, 33055, 70323, 99165, 117205, 351615, 1280731, 3842193, 6403655, 14088041, 19210965, 42264123, 70440205, 211320615.

If you add them up, you will get the total of 211,320,773. Now subtract 211,320,615 to get 158,317,017