#Mumps, 14 Bytes# R I W I**(1/I) R reads from input into variable I, and the W (write) statement does the mathematical calculations. I will warn you: the output will be ugly as there are no implied newlines in Mumps, and at least the way I read the challenge, the OP didn't require them. If you did want cleaner output, add 2 bytes and add a newline: R I W !,I**(1/I)