The least common factor of any set of integers is 1.
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1, 2, 5, 10
As factors, 1, 2, 5 and 10.
The common factors of 40 and 45 are the numbers that can evenly divide both 40 and 45 without leaving a remainder. The factors of 40 are 1, 2, 4, 5, 8, 10, 20, and 40. The factors of 45 are 1, 3, 5, 9, 15, and 45. The only common factor of 40 and 45 is 5.
The factors of 30 are:1, 2, 3, 5, 6, 10, 15, 30The factors of 40 are:1, 2, 4, 5, 8, 10, 20, 40The common factors are:1, 2, 5, 10The Greatest Common Factor:GCF = 10
Just 1