Q: What is the sum of all factors of the number 421,313,230 excluding 421,313,230?

A: 396,364,274

Why is 396,364,274 the sum of all factors of 421,313,230, excluding 421,313,230?

The factors of the number 421,313,230 are: 1, 2, 5, 10, 13, 26, 65, 130, 1217, 2434, 2663, 5326, 6085, 12170, 13315, 15821, 26630, 31642, 34619, 69238, 79105, 158210, 173095, 346190, 3240871, 6481742, 16204355, 32408710, 42131323, 84262646, 210656615, 421313230.

If you add them up, you will get the total of 421,313,626. Now subtract 421,313,230 to get 396,364,274