题解 | 1=N
1=N
https://www.nowcoder.com/practice/31469f8503c24914acd5c0290ad4dfbb
import sys
import math
n = 0
max_in = 0
ans = 0
for line in sys.stdin:
a = line.split()
n = int(a[0])
max_in = int(math.sqrt(n))
for k in range(2, max_in):
if (n % k == 0):
num = 0
while (n % k == 0):
num += 1
n /= k
ans += num * k
if (n > 1):
ans += n
print(int(ans))
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