n = int(input())

def trial_division(n):
    a = []  
    while n % 2 == 0:
        a.append(2)
        n //= 2
    f = 3
    while f * f <= n:
        if n % f == 0:
            a.append(f)
            n //= f
        else:
            f += 2   
    if n != 1: a.append(n)

    return a

D = {}
for v in trial_division(n) :
    if v not in D :
        D[v] = 1
    else :
        D[v] += 1

ans = 1
for v in D :
    tmp = 0
    for i in range(D[v]+1) :
        tmp += v ** i
    ans *= tmp

print(ans)