import itertools, math, sys
mod = 10 ** 9 + 7
N,K = map(int,input().split())

def prime_factorize(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

P = prime_factorize(N)
NP = len(P)
P = P + [1] * NP
# nCk (mod MOD) を求める
def comb(n, k):
    tmp = 1
    for i in range(k):
        tmp = (tmp * (n - i) * pow(i+1, mod-2, mod)) % mod
    return tmp

Y = set(itertools.combinations(P,NP))
ans = 0
for y in Y:
    dic = {}
    for i in y:
        if i > 1:
            if i in dic:
                dic[i] += 1
            else:
                dic[i] = 1
    tmp = 1
    for k,v in dic.items():
        tmp = tmp * comb(K+v-1,v) % mod
    ans += tmp
    ans %= mod
print(ans)