Just asking (1): why five husbands?

Carracci: Jesus meets the Samaritian woman at the well (Annibale Carracci (1560-1609), Public domain, via Wikimedia Commons)

I’m just asking.

It was recorded that Jesus told the woman at the well that he knew she had had five husbands. (John 4)

I’m just asking.
How could a woman then managed to have five husbands and yet survived the stoning, five times?

Ok.
Then she wasn’t an adulteress after all.

I still am asking.
Could she have been divorced five times for trivial matters?
Surely men could easily divorce, with a piece of paper.

I still am asking.
All five?

What could be the perennial and irrefutable justification for divorcing a wife?

Once heard it suggested, no biblical text to back up, that it might be barrenness. That could be perhaps the robust reason for divorcing a man’s wife then in that culture.

If that’s the case, how would it affect any interpreter’s view of the woman?
And how would the woman view herself, or be viewed in the community?

I am just asking.