I've found an old Blockchain wallet with 0.013 bitcoins it.
The problem is that those bitcoins are dvided through many wallets
I'm confused... I thought you said you found AN old Blockchain wallet? Now you are saying MANY wallets?
Are they divided through many wallets? Or do you mean they are divided through many addresses in the same wallet?
Now I'm more confused.
I thought you said you found an old Blockchain WALLET?
Now you are saying it is an ACCOUNT somewhere?
Is it a Blockchain wallet? Or is it an account somwehere? If it is an account, and not a wallet, then which service is hosting the account? Blockchain does not provide accounts. They just provide wallets.
The only way to unite multiple transactions is to send a new transaction that combines them. If the values of all those pieces are small enough, then you may find that the transaction fees are more than the value of the pieces your are trying to send.