Answer:
2·2·3 or {1, 2, 3, 4, 6, 12} depending on what you mean
Explanation:
You want the factors of 12.
Prime factors
The prime factors of 12 are ...
12 = 2·2·3 = 2²·3
Divisors
The product of exponents of the prime factors, each increased by 1, is the number of divisors of 12:
(2+1)(1+1) = 3·2 = 6 . . . . number of divisors of 12.
Those are ...
1, 2, 3, 4, 6, 12
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Additional comment
The word "factors" is often used when "divisors" is intended. An expression is factored when it is expressed as a product of prime factors.