147, 294, 441 and so on.
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LCM: 147 GCD: 7 The common factors are 1 and 7.
The Least Common Multiple (LCM) for 49 63 21 is 441.
The common multiples of 7, 14, and 21 are the infinite set of multiples of their least common multiple, which is 42. So the common multiplesof 7, 14, and 21 are 42, 84, 126, 168, and so on.Any multiple of 42.
The least common multiple of the numbers 21, 48 and 49 is 2,352.
14, 21, 28, 35, 42, 49, 56, 63 . . .