Problem 56743. Count the unitary divisors of a number
Cody Problem 56738 asks for a list of the unitary divisors of a number. For this problem, write a function to count the unitary divisors of a number. For example, the unitary divisors of 18 are 1, 2, 9, and 18; therefore, the number of unitary divisors is 4.
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Sequences and Series VI
- 16 Problems
- 3 Finishers
- Compute a determinant
- Determine whether the input is an anagram number
- Generate the Figure-Figure sequence
- Determine whether a number is practical
- Count the peaceful queens
- Flip the parity of digits in a decimal expansion
- Trap a knight
- Count estrangements
- List numbers that are not squares
- List the nth term of Rozhenko’s inventory sequence
- Count the unitary divisors of a number
- Sum the unitary divisors of a number
- Compute the unitary totient of a number
- Compute the Lagarias Riemann Hypothesis sequence
- Compute the largest number with a given integer complexity
- Compute the Tetris sequence
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