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1 but one doesn't count so it would have to be 3

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Wiki User

13y ago

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More answers

The least common factor is 1. (The least common factor of any two or more positive integers is always 1.)

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Wiki User

11y ago
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The LCM of 3 and 21 is 21.

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Wiki User

8y ago
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The LCM of 3, 14, and 21 is 42

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Wiki User

8y ago
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84

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8y ago
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105

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Wiki User

11y ago
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63

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Wiki User

9y ago
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147

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9y ago
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21 is.

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Wiki User

13y ago
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Q: What is a least common multiple of 3 9 21?
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