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A certain number has exactly eight factors including 1 and itself. Two of its factors are 21 and 35. What is the number?
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A certain number has exactly eight factors including 1 and itself. Two of its factors are 21 and 35. What is the number?

User Derfred
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The eight factors are 1, 3, 5, 7, 15, 21, 35, 105.
A certain number has exactly eight factors including 1 and itself. Two of its factors-example-1
User Napolean
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