Question 414521
The smallest number that can have both 4 and 7 as factors is 28,
so 14 and 28  must also be factors of the number.
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The smallest number that can have both 5 and 7 as factors is 35,
so 35 must also be a factor of the number.
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The smallest number that can have both 4 and 5 as factors is 20,
so 10 must also be a factor of the number.
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10,14,28,35