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The factors of 105 are:

1, 3, 5, 7, 15, 21, 35, 105

The factors of 441 are:

1, 3, 7, 9, 21, 49, 63, 147, 441

The common factors are:

1, 3, 7, 21

The Greatest Common Factor (GCF) is:

21

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12y ago

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