0
One pair: it's a Prime number.
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Earn +20 ptsQ: How many factor pairs does 91 have?
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How many factor pairs are there in 120?
Eight of them.
How many factor pairs does 85 have?
Two of them.
How many factor pairs does 20have?
Three of them.
How many factor pairs does 225 have?
225 has five factor pairs:225,175,345,525,915,15
How many factor pairs can you find for 12 if factors can be positive negative zero?
12 has three factor pairs, six if you count their negative counterparts.
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