Asking "how many cousins do you have?" What is a collective term for first cousins?

Everywhere I've looked it is emphasized that the correct term for "cousin" depends on age, sex and whether the cousin is on father's or mother's side. But that's for individual cousins. And the closer I've found to a collective term is 堂兄弟，堂姊妹，表兄弟，表姊妹, which still is four terms for different types of cousins, so it isn't exactly what I'm looking for.

So, how would you ask a question such as "how many cousins do you have?" in Chinese?
I would suggest asking separately: 你有多少个堂兄弟姐妹 and 你有多少个表兄弟姐妹, 
because China is a patrilineal society traditionally, relatives of father's side are more closer naturally. 

Of course, things are changing rapidly in China nowadays, this might not be true to every individual any more.