View Compilation Error

0_0_4574595_21209.cpp: In member function `int Prime<T>::factorization(T)':
0_0_4574595_21209.cpp:41: error: there are no arguments to `sqrt' that depend on a template parameter, so a declaration of `sqrt' must be available
0_0_4574595_21209.cpp:41: error: (if you use `-fpermissive', G++ will accept your code, but allowing the use of an undeclared name is deprecated)
0_0_4574595_21209.cpp: In member function `int Prime<T>::factorization(T) [with T = I64]':
0_0_4574595_21209.cpp:66:   instantiated from here
0_0_4574595_21209.cpp:41: error: `sqrt' undeclared (first use this function)
0_0_4574595_21209.cpp:41: error: (Each undeclared identifier is reported only once for each function it appears in.)