The LCM is 3420.
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38
LCM = product/HCF so product = LCM/HCF in this case 380/16 which is 23.75, so the answer to your question is no.
Least Common Multiple (LCM) for 18 57 is 342
You need at least two numbers to find an LCM. If that's 38 and 18, the LCM is 342.
LCM is 380.Proof19*20=380as 19 is a prime numberTheir product.