1, 2 and 4
All numbers have divisors. Some numbers have some of the same divisors as other numbers. These are called common divisors. 3 is a divisor of 9. 3 is a divisor of 12. 3 is a common divisor of 9 and 12.
The numbers that go into both 12 and 9 are their common divisors. The common divisors of 12 are 1, 2, 3, 4, 6, and 12, while the common divisors of 9 are 1, 3, and 9. The only common divisor between 12 and 9 is 1 and 3. Thus, 1 and 3 are the numbers that go into both 12 and 9.
60?
The numbers that can go into both 12 and 30 are their common divisors. The common divisors of 12 and 30 are 1, 2, 3, and 6. The greatest common divisor (GCD) is 6. Thus, 1, 2, 3, and 6 can evenly divide both 12 and 30.
12 divisors: 1 2 4 5 10 11 20 22 44 55 110 220.
1, 2, 3, 4, 6, 12
2,835 has 20 divisors.
60. The number 60 has 12 divisors if you are counting the 1 and 60. The divisors (given as factor pairs) are 1, 60, 2, 30, 3, 20, 4, 15, 5, 12, 6, 10.
200 has 12 divisors: 1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 100, 200.
The common divisors of 160 and 220 are: 1, 2, 4, 5, 10, 20.
The numbers that can go into both 18 and 96 are their common divisors. The common divisors of 18 are 1, 2, 3, 6, 9, and 18, while the common divisors of 96 are 1, 2, 3, 4, 6, 8, 12, 16, 24, 32, 48, and 96. The common divisors of both numbers are 1, 2, 3, and 6.
12 has six divisors.