46
23,2
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The highest common factor of 46 and 138 is 46Factorization method:46 = 2×23138 = 2×3×23highest common factor = 2×23 = 46Alternative (modular) method:138 mod 46 = 0so 46 is the highest common factor.
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1638 819,2 273,3,2 91,3,3,2 13,7,3,3,2
The only name is factorization.
72 36,2 18,2,2 9,2,2,2 3,3,2,2,2