What is the LCM of 7 and 56?

Prime factorization of 7 = 7

Prime factorization of 56 = 2*2*2*7

Common number(factor in factorization) or simply H.C.F.= 7

L.C.M. = H.C.F. * Product of other numbers = 7*2*2*2 = 56

In this case 7 is an exact divisor of 56, therefore L.C.M. = 56