They are 2 and 3
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The common prime factors of 18 and 36 are 2 and 3. Both numbers can be divided evenly by 2 and 3.
The prime factors of 36 are 2 and 3. To be common, they need to be compared to another set of prime factors.
The factors of 16 are 2, 4 and 8. The factors of 36 are 2, 4, 9, 12 and 18. The common factors are therefore 2 and 4. The common prime factor is 2.
The prime factors of 24 are 2,2,2 and 3 The prime factors of 36 are 2,2,3 and 3 Thus the common factors are 1,2,3,4,6 and 12.
Prime factors of 12 2x2x3 Prime factors of 36 2x2x3x3 Greatest common factor of 12 and 36 = 2x2x3 = 12
The factors of 12 are: 1, 2, 3, 4, 6, and 12.The prime factors of 12 are: 2 and 3.The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, and 36.The prime factors of 36 are: 2 and 3.