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215 = 32768 and the sum of its digits is 3 + 2 + 7 + 6 + 8 = 26.
What is the sum of the digits of the number 21000?
k=1000 temp=1; for i in range(1,k+1): temp*=2 temp=str(temp) result=0 for i in range(0,len(temp)): result+=int(temp[i]) print(result)
time : <1s
欧拉计划(python) problem 16
原文地址：http://blog.csdn.net/zhangzhengyi03539/article/details/43193233
