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No. For example:

3 is a factor of 9, 15, 21, ...

3 is not a factor of 5, 7, 11, 13, 17, 19, ...

Note that there are lots of odd numbers that have NO smaller factors (excluding 1, and negative factors, of course). Such numbers are called prime numbers. The sequence of prime numbers starts with:

2, 3, 5, 7, 11, 13, 17, 19, 23, 29, 31, ...

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10y ago

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No. Consider 7.

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9y ago
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Q: Is three a factor of every odd number?
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