There is no problems with ports. Router's build-in PPTP client easy connects with any other vpn servers, I checked. And an android device connect hamachi PPTP VPN server via this router. But router's build-in client can't connect hamachi server itself.
That is the point I dont know much about hamachi server settings. Just only protocol: PPTP, server domain name, username, password, and that its using MPPE encryption. Maybe its about MTU or some particular hamachi's PPTP server settings. What is why Im asking. Maybe someone has clue about it.