python get_armstrong_numbers

def get_armstrong_numbers(pNumber: int) -> str:
    lower = 100
    sval = ''
    for num in range(lower, pNumber + 1):
        order = len(str(num))
        sum = 0
        temp = num
        while temp > 0:
            digit = temp % 10
            sum += digit ** order
            temp //= 10
        if num == sum:
            sval += str(num)

    return sval