Project Euler 34

• 問題

Problem 34：Digit factorials
145 is a curious number, as 1! + 4! + 5! = 1 + 24 + 120 = 145.

Find the sum of all numbers which are equal to the sum of the factorial of their digits.

Note: as 1! = 1 and 2! = 2 are not sums they are not included.

• 解答例

import math

sum = 0
for i in range(3, math.factorial(9) * 7 + 1):
    temp = 0
    strNum = list(str(i))
    for n in strNum:
        temp += math.factorial(int(n))
    if i == temp:
        sum += temp
print(sum)