(time (m/factor-pairs 27))
"Elapsed time: 0.308894 msecs"
=> ([3 9] [1 27])
(time (m/factor-pairs 27))
"Elapsed time: 0.065566 msecs"
=> ([3 9] [1 27])
"Elapsed time: 0.308894 msecs"
=> ([3 9] [1 27])
(time (m/factor-pairs 27))
"Elapsed time: 0.065566 msecs"
=> ([3 9] [1 27])