题解 | #完全数计算#
完全数计算
https://www.nowcoder.com/practice/7299c12e6abb437c87ad3e712383ff84
def f(num):
l=[]
if num==1:
pass
for i in range(1,num):
if num%i==0:
l.append(i)
return l
a=int(input())
b=0
for i in range(2,a+1):
if sum(f(i))==i:
b+=1
print(b)
