import sys
input = sys.stdin.readline

from random import randint
from collections import Counter

R=[randint(10**15,10**16) for i in range(10**6+5)]

# エラトステネスの篩を用いた素因数分解・約数列挙
MAX=2*10**6+10 # 使いたい最大値を指定

# Sieve[i]で、iの最も小さい約数を返す。
Sieve=[i for i in range(MAX)]

for i in range(2,MAX):
    if Sieve[i]!=i:
        continue
    
    for j in range(i,MAX,i):
        if Sieve[j]==j:
            Sieve[j]=i

# 素因数分解
def fact(x):
    D=dict()
    while x!=1:
        k=Sieve[x]
        if k in D:
            D[k]+=1
        else:
            D[k]=1
        x//=k
    return D

# 約数列挙
def faclist(x):
    LIST=[1]
    while x!=1:
        k=Sieve[x]
        count=0
        while x%k==0:
            count+=1
            x//=k

        LIST2=[]
        for l in LIST:
            for i in range(1,count+1):
                LIST2.append(l*k**i)
        LIST+=LIST2

    return LIST



n=int(input())
A=list(map(int,input().split()))

X=[0]

for a in A:
    L=fact(a)
    x=0
    for l in L:
        if L[l]%2==1:
            x^=R[l]
    X.append(X[-1]^x)

C=Counter(X)
ANS=0

for c in C:
    ANS+=C[c]*(C[c]-1)//2

print(ANS)