The only two numbers that go into 18 and 50 evenly are one and two.
The two whole numbers that go into 142 evenly are 1, 2, 71, and 142.
5 and 7
2 & 103
Well 2 and 4 both go in evenly.
24 24 times
none evenly because it is a prime number.
The two numbers that can go into 250 evenly are 1, 2, 5, 10, 25, 50, 125, and 250 .
The two whole numbers that go into 40 evenly are 1, 2, 4, 5, 8, 10, 20, and 40.
The prime factorization of 56 is 2, 2, 2, and 7, so there there are two prime numbers, 2 and 7, that can evenly go into 56.
Pick two, these all go in to 58 evenly: 1, 2, 29, 58.
One and two will go into both numbers evenly leaving no remainders.