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How many positive integers less than 20 have an odd number of distinct factors?
Wiki User
∙ 15y ago
13.
1, 2, 3, 4, 5 , 7, 8, 9, 11, 13, 16, 17, and 19.
Wiki User
∙ 15y ago
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Are all integers positive?
The set of integers includes negative integers as well as positive integers. It also includes the number zero which is neither negative nor positive.
Integers greater than zero are what kind of integers?
These are positive integers, usually denoted with the symbol (+) the number. Check the video on youtube Ordering Integers.
If told that 'q' 'p' and 'r' are distinct primes and that there exists 'n' such that 'n equals p x q x r' How many positive factors of 'n' are there and How do you determine what they are?
If p, q and r are distinct primes and n=pxqxr then n will have 8 factors, all of which will be positive since prime numbers are all positive, which are: n(pqr), pq, pr, qr, p, q, r and 1. Here there were 3 distinct primes so the number of positive factors is 2^3. In general if you had p distinct primes then you would have 2^p positive factors.
Is -1 a whole number that is not positive?
Yes. Alternative answer: No, -1 is not a whole number. The whole numbers are 0 and the positive integers, but do not include negative integers.
What is the quotient of 2 integers with the same sign?
It would be a positive number. A negative number divided by a negative number would be positive. A positive number divided by a positive number would also be positive. So, the quotient of 2 integers with the same sign will be a positive number, regardless of which sign the two numbers had.
How many positive integers less than 2010 have an odd number of factors?
There are 44 positive integers less than 2,010 that have an odd number of factors.
What is the positive difference between the number of distinct prime factors of 15 2 and the number of distinct prime factors of 64 3?
The difference is one.
What are all the factors of the Numbers's?
The factors of a number comprises all positive integers which go into it evenly.
What are consider as composite number?
Positive integers with more than two factors.
What is the smallest number that has 4 different factors?
Among positive integers, 6
What is the smallest number with exactly four factors?
Among positive integers, 6
What is the answer composite number?
Composite numbers are positive integers with more than two factors.
What is the largest three-digit number with exactly two factors that are positive integers?
997
If d is the number of distinct prime factors of 12 and f is the number of positive factors of 12 what is the sum of d and f?
6
What is the third smallest natural number that has exactly four distinct positive factors?
3
Find the number of factors that the number 25 has?
1, 5, 25 are the only factors of 25. So, there are 3 factors of 25. Note: We only care about POSITIVE INTEGERS.
What numbers always have an even number of factors?
All positive integers which are not perfect squares.
