The common factors of 28 and 60 are: 1, 2, and 4
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28
Do a prime factorization of both... 28 = 2x2x7 60 = 2x2x3x5 Use the common factor only once and the other factors (2x2) is common to both ... use this only once ( 2x2)x7x3x5 = 420
The LCM of 28 and 60 is 420.420
Factors of 28... 1,2,4,7,14,28 Factors of 44... 1,2,4,11,22,44 Common factors therefore are 1,2 & 4
Common factors of 44 and 60 are: 1, 2, and 4.