import std.functional,
       std.algorithm,
       std.container,
       std.typetuple,
       std.typecons,
       std.bigint,
       std.string,
       std.traits,
       std.array,
       std.range,
       std.stdio,
       std.conv,
       std.format;

void main()
{
auto ip = readln.split.to!(int[]);
int count;
foreach(i; ip[0]..ip[1]+1){
	if(ip[2] % i == 0) count++;
}
writeln(count);
}
