def get_factor_list(self):
        """
        get_factors: [['2', 3], ['3', 2]]
        Returns: [2, 2, 2, 3, 3]
        """
        factors = self.get_factor_from_api()
        if not factors:
            return []
        ml = [[int(x)] * y for x, y in factors]
        return [y for x in ml for y in x]
get_factors: [['2', 3], ['3', 2]]
        Returns: [2, 2, 2, 3, 3]