How to get hours and minutes from 'datetime.timedelta' object?

[Lad]

Hello,
what is the best /easest  way how to get number of hours and minutes
from a timedelta object?
Let's say we have
aa=datetime.datetime(2006, 7, 29, 16, 13, 56, 609000)
bb=datetime.datetime(2006, 8, 3, 17, 59, 36, 46000)
so
c=bb-aa
will be
datetime.timedelta(5, 6339, 437000)

I can easily get days ( c.days)
 but
I still can not figure out how easily to get hours and minutes
Any idea?
Thank you for help
L.