>>> from arreldigital import es_arrel_digital

>>> es_arrel_digital(7, 7)
True
>>> es_arrel_digital(26, 8)
True
>>> es_arrel_digital(26, 6)
False
>>> es_arrel_digital(374, 5)
True
>>> es_arrel_digital(374, 14)
False
>>> es_arrel_digital(69870, 3)
True
>>> es_arrel_digital(9898999887998978799, 6)
True