题解 | #完全数计算#
完全数计算
https://www.nowcoder.com/practice/7299c12e6abb437c87ad3e712383ff84
def perfect(num):
list_ = [1]
a = 0
for i in range(2, int(num**0.5)+1):
if num % i == 0:
list_.append(i)
list_.append(num//i)
for i in list_:
a += i
if a == num:
return 1
else:
return 0
nout = 0
for i in range(int(input())+1):
nout += perfect(i)
print(nout-1)
