15 and 90, respectively.
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The multiples of 15 are 15, 30, 45, 60, 75, 90 The LCM of 15 and 90 is 90. The factors of 15 are 1, 3, 5, 15 The factors of 90 are 1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90 The GCF is 15.
45 and any factor of 45 15 and 9 9 and 5
The GCF is 30.
It is: 90
The factors of 90 are:1, 2, 3, 5, 6, 9, 10, 15, 18, 30, 45, 90The factors of 162 are:1, 2, 3, 6, 9, 18, 27, 54, 81, 162The common factors are:1, 2, 3, 6, 9, 18The Greatest Common Factor (GCF) is: 18