There isn’t any way to do this with ACF because of the way that ACF stores the values and labels for the radio buttons. You would need to have a different value for every choice.
You could have choices like
1 : No
1.0 : Hell No
1.00 : Are you nuts?
These values would be stored as strings and you could convert them to integers when getting the values
$value = intval(get_field('radio_field'));