N,K=map(int,input().split())

# N=p*A+K

LIST=[]

for i in range(1,10**6+5):
    if (N-K)%i==0:
        LIST.append(i)
        LIST.append((N-K)//i)

ANS=0
for s in set(LIST):
    if N%s==K:
        ANS+=1

print(ANS)