Factors of 20 Factors of a number are the numbers which give the same number when they are multiplied. 1×20=20 2×10=20 4×5=20 -1x-20=20 -2x-10=20 -4x-5=20 Factors of 20 are 1, 2, 4, 5, 10, 20,-1,-2,-4,-5,-10,-20
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