A vampire number is a number v that is the product of two numbers x and y such that the following conditions are satisfied:
If these conditions are met, x and y are known as "fangs" of v. For example, 1260 is a vampire number because 1260 = 21*60, so 21 and 60 are the fangs.
Write a function that returns all the pairs of fangs for a given number. The output is a matrix in which each row is a pair; the values in the first row should be in increasing order. If it is not a vampire number, it will return empty arrays.
Example:
disp(vampire_factor(125460))
204 615 246 510
See also: Problem 1804. Fangs of a vampire number and and 1826. Find vampire numbers.
36240 Solvers
332 Solvers
Sum all integers from 1 to 2^n
6323 Solvers
Set the array elements whose value is 13 to 0
749 Solvers
We love vectorized solutions. Problem 1 : remove the row average.
381 Solvers