Q: What is the sum of all factors of the number 666,623,421 excluding 666,623,421?
A: 341,411,139
The factors of the number 666,623,421 are: 1, 3, 9, 23, 69, 207, 317, 951, 2853, 7291, 10159, 21873, 30477, 65619, 91431, 233657, 700971, 2102913, 3220403, 9661209, 28983627, 74069269, 222207807, 666623421.
If you add them up, you will get the total of 666,623,762. Now subtract 666,623,421 to get 341,411,139