Q: What is the sum of all factors of the number 405,060,018 excluding 405,060,018?

A: 489,905,742

Why is 489,905,742 the sum of all factors of 405,060,018, excluding 405,060,018?

The factors of the number 405,060,018 are: 1, 2, 3, 6, 11, 22, 33, 66, 79, 158, 237, 474, 869, 1738, 2607, 5214, 77687, 155374, 233061, 466122, 854557, 1709114, 2563671, 5127342, 6137273, 12274546, 18411819, 36823638, 67510003, 135020006, 202530009, 405060018.

If you add them up, you will get the total of 405,060,507. Now subtract 405,060,018 to get 489,905,742