Q: What is the sum of all factors of the number 420,315,055 excluding 420,315,055?

A: 144,300,305

Why is 144,300,305 the sum of all factors of 420,315,055, excluding 420,315,055?

The factors of the number 420,315,055 are: 1, 5, 17, 19, 85, 95, 317, 323, 821, 1585, 1615, 4105, 5389, 6023, 13957, 15599, 26945, 30115, 69785, 77995, 102391, 260257, 265183, 511955, 1301285, 1325915, 4424369, 4944883, 22121845, 24724415, 84063011, 420315055.

If you add them up, you will get the total of 420,315,199. Now subtract 420,315,055 to get 144,300,305