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The factors of 140 are 1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, and 140.

The factors of 180 are 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 36, 45, 60, 90, and 180.

The common factors of 140 and 180 are 1, 2, 4, 5, 10, and 20. The least (smallest) common factor is 1.

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16y ago

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