Q: What is the sum of all factors of the number 145,721,821 excluding 145,721,821?
A: 20,817,411
The factors of the number 145,721,821 are: 1, 7, 20817403, 145721821.
If you add them up, you will get the total of 145,721,841. Now subtract 145,721,821 to get 20,817,411