To find the prime factors of a number, it is easiest to divide that number by any obvious factors. In this case, 28 is even so we can divide by 2 to give 14. 14 is also even, so we
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The factors for 28 are 1,2,4,7,14 and 28. For 180 are 1, 2, 3, 4, 5, 6, 9,10, 12,
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2 x 2 x 7 = 28. 2 x 2 x 3 x 5 = 60. 2 x 2 x 3 x 5 x 7 = 420, the LCM.
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The factors of 28 are: 28, 14, 7, 4, 2, 1, 1, 2, 4, 7, 14, an...
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