Is there a maximum of Administrators per account / administration ?

Dear all, 

I have Admin rights at Account level. I know that DocuSign strongly recommend to have at least 2 administrator “If you have a paid account with two or more users, each time you log in, DocuSign verifies that you have more than one active full administrator on the account. If your account has only one full administrator, an information banner appears at the top of the page.”

Based on our Sandbox environment I know that we can have more than 5 Admin. 

Is it the same rules at Administration level ? 

Regards