gcf of 4 and 218, gcf of 4 and 28, gcf of 4 and 18, gcf of 4 and 6, gcf of 4 and 20, gcf of 4 and 24, gcf of 4 and 25, gcf of 4 and 26, gcf of 4 and 60, gcf of 4 and 22, gcf of 4 and 64, gcf of 4 and 27, gcf of 4 and 256, gcf of 4 218
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