Least Common Multiple (LCM) of 441 and 21

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To get the Least Common Multiple (LCM) of 441 and 21 we need to factor each value first and then we choose all the factors which appear in any column and multiply them:

441:   3377
21:   3 7 
LCM:   3377

The Least Common Multiple (LCM) is:   3 x 3 x 7 x 7 = 441

 

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