1, 2, 4, 5, 8, 10, 20, 40
2..
easy, 40
400
2 and 10 go into 40 and 50 evenly.
Least number is 40
Their lowest common factor is 360 . There are an infinite number of more examples.
40
Not evenly.
Not evenly.
No. 40 is not evenly divisible by 18.
No. 97 is not evenly divisible by 40.
No. 40 is not evenly divisible by 15.