If you have 42 treaties they can be divided into 6 groups with 7 treaties in each group or 7 groups with 6 in each. No smaller number of treaties can be divided into groups of 6 or 7.
The smallest number is 42. I do not know if that has anything to do with treaties.
The smallest number which is exactly divisible by the numbers 8 9 and 10 is 360.
12
339 + 1 = 340,which is exactly divisible.
10080
1260
It is: 30
27720
It is: 10152
16
13
2
27720