LCM( 28, 62 ) = 868
The formula for finding LCM is
$$ \text{LCM} (a, b) = \frac{ a \cdot b }{ \text{GCD}(a,b)} $$In this example we have: a = 28, b = 62 and GCD(28, 62) = 2.
$$ \text{LCM} (28, 62) = \frac{ 28 \cdot 62 }{ \text{GCD}(28,62)} = \frac{ 1736 }{ 2 } = 868 $$