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13 is a Prime number so the only factors are 1 and itself. Prime numbers have no proper factors.
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Earn +20 ptsQ: What are the proper factors of 13?
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What are the proper factors of the number 65?
5 and 13
How many factors does 91 have?
91 has 4 factors (2 of them which are proper). Those factors are:{1, 7, 13, 91}
What are the two prime numbers of 91?
The two proper prime factors are 7 and 13.
What are the proper factors of 5?
Prime numbers don't have proper factors.
What are all the proper factors of 220?
The proper factors of 220 are 2,4,5,10,11,20,22,44,55,110
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