0
Anonymous
13
Wiki User
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1, 2, 3, 13, 26, 39, 78
1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156
1, 2, 3, 4, 6, 12, 13, 26, 39, 52, 78, 156.
1, 3, 13, 39.
The HCF of 39 and 20 is 1