Least common multiple (LCM) is a two or more non-zero integers, an integer that is a multiple of the given integers is a common multiple of all the positive common multiples, the least is the least common multiple. The LCM of the given number has the property of dividing any other common multiple of the given number.<br /> For example : if α = 168 =2<sup>3</sup> × 3 × 7 and b = 180 = 2<sup>2</sup> × 3<sup>2</sup> × 5, than the LCM is 2<sup>3</sup> × 3<sup>2</sup> × 5 × 7= 2520.