2
Only the number one.
Only the number one.
How about: 80
2 and 10 go into 40 and 50 evenly.
The number two.
Yes, the number is one (1).
One.
6*9=54 so they both go into it evenly, but the lowest number is 18.
One.
Least number is 40
30
Only the number one (1) goes into both 100 and 31 evenly.