A square number.
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16 is a number that has four identical even factors.
If the two numbers have no common factors other than 1, the LCM will be their product. If there are other common factors, the LCM will be less.
The factors of 169 are 1, 13, and 169, and the prime factors are 13 x 13. 169 is the product of 1 x 169 or of the prime factors 13 x 13.
2 x 3 x 11 = 66
The product will be greater than 1, when each of the two factors are greater than 1.