题解 | #完全数计算#
完全数计算
https://www.nowcoder.com/practice/7299c12e6abb437c87ad3e712383ff84
def f(x):# 判断x是不是完美数
ls = []
for i in range(1,x+1):
if x%i == 0 and i != x:
ls.append(i)
# print(ls)
sum_x = sum(ls)
#print(sum_x)
if sum_x == x:
return True
else:
return False
n = int(input())
c = 0
for j in range(1,n+1):
if f(j):
c+=1
print(c)
