Least Common Multiple (LCM) of 21 and 61

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To get the Least Common Multiple (LCM) of 21 and 61 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

21:   37 
61:     61
LCM:   3761

The Least Common Multiple (LCM) is:   3 x 7 x 61 = 1281

 

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