Q: What is the sum of all factors of the number 221,434,005 excluding 221,434,005?

A: 161,001,195

Why is 161,001,195 the sum of all factors of 221,434,005, excluding 221,434,005?

The factors of the number 221,434,005 are: 1, 3, 5, 13, 15, 39, 65, 195, 541, 1623, 2099, 2705, 6297, 7033, 8115, 10495, 21099, 27287, 31485, 35165, 81861, 105495, 136435, 409305, 1135559, 3406677, 5677795, 14762267, 17033385, 44286801, 73811335, 221434005.

If you add them up, you will get the total of 221,434,166. Now subtract 221,434,005 to get 161,001,195