题解 | #完全数计算#
完全数计算
https://www.nowcoder.com/practice/7299c12e6abb437c87ad3e712383ff84
n = int(input())
c = 0
for k in range(1,n+1): # 所有的n
sum = 0
for i in range(1,int(k/2)+1): # 所有的因子只取一半
if k % i == 0:
sum += i
if sum == k:
c += 1
print(c)
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