1 has one factor.
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It is 97 which has only two factors because it is a prime number
There are a few numbers that are less than 19 and have more than 4 factors. The number 10 is less than 19 and has more than four factors.
The number is 54. It is greater than 36 and less than 70. One of its factors is 9 and it is an even number.
There are 44 positive integers less than 2,010 that have an odd number of factors.
24