#include #define FOR(i,a,b) for (int i=(a);i<(b);i++) #define FORR(i,a,b) for (int i=(a);i>=(b);i--) #define pb push_back #define pcnt __builtin_popcount #define show(x) cout<<#x<<" = "< pii; typedef vector vi; typedef vector vvi; typedef vector vpii; typedef set si; typedef pair pll; typedef vector vl; typedef vector vvl; typedef vector vpll; typedef set sl; typedef __int128_t lll; typedef pair plll; typedef vector vlll; templatestring join(vector&v) {stringstream s;FOR(i,0,sz(v))s<<' '<b)swap(a,b);for(;a>0;b%=a,swap(a,b));return b;} int modpow(ll a,ll n,int m){if(a==0)return a;ll p=1;for(;n>0;n/=2,a=a*a%m)if(n&1)p=p*a%m;return(int)p;} void dout(double d){printf("%.12f\n",d);} const int iinf = 1e9; const ll linf = 1e18; const int mod = 1e9+7; const double pi = acos(-1); const double eps = 1e-10; struct Prime{ vl pl; random_device rnd; mt19937_64 mt; Prime(){ mt = mt19937_64(rnd()); } __int128_t mp(ll _a,ll n,ll m){ if(_a==0)return 0; __int128_t a=_a, p=1; for(;n>0;n/=2,a=a*a%m)if(n&1)p=p*a%m; return p; } bool miller_rabin(ll _n){ __int128_t n, t, y; ll a, d; _n = abs(_n); if(_n==2) return true; if(_n==1||(_n&1)==0) return false; uniform_int_distribution dist(1, _n-1); n = __int128_t(_n); d = _n-1; while((d&1)==0) d>>=1; FOR(i, 0, 100){ a = dist(mt); t = d; y = mp(a,t,_n); while(t != _n-1 && y != 1 &&y != n-1){ y = (y*y)%_n; t <<= 1; } if(y != _n-1 && (t&1) == 0) return false; } return true; } bool is_prime(ll a){ if(a < 2)return false; each(itr, pl){ if(*itr * *itr > a)return true; if(a%*itr == 0)return false; } return true; } void init(int a){ pl.resize(0); pl.pb(2); pl.pb(3); int i = 5; while(i <= a){ if(is_prime(i)) pl.pb(i); i += 2; if(is_prime(i)) pl.pb(i); i += 4; } } void prime_division(ll a, vpii&v){ // vに素因数分解の結果が入る v.resize(0); for(vl::iterator itr = pl.begin(); *itr * *itr <= a; itr++){ if(a%*itr == 0){ ll c = 0; while((a%*itr) == 0){ a /= *itr; c++; } v.pb(pii(*itr, c)); } } if(a > 1)v.pb(pii(a, 1)); } void divisor(ll a, vl&v){ // v に約数が入る v.pb(1); for(vl::iterator itr = pl.begin(); *itr * *itr <= a; itr++){ if(a%*itr == 0){ ll b = 1, vs = sz(v); while((a%*itr) == 0){ a /= *itr; b *= *itr; FOR(j, 0, vs)v.pb(v[j] * b); } } } if(a>1){ int vs = sz(v); FOR(j, 0, vs)v.pb(v[j] * a); } } }; ll memo[35][1024][1024]; map m; vl v; ll N, X; ll get(int n, ll a, ll b){ if(memo[n][a][b] == -1){ if(n == 1){ memo[n][a][b] = a >= b ? 1 : 0; }else{ ll su = 0, _a = v[a], _b = v[b]; FOR(i, 0, n) _a /= _b; if(_a == 0){ memo[n][a][b] = 0; return 0; } _a = v[a]; FOR(i, b, sz(v)){ if(_a % v[i] != 0) continue; su += get(n-1, m[_a/v[i]], m[v[i]]); } memo[n][a][b] = su; } } return memo[n][a][b]; } main(){ cin.tie(0); ios::sync_with_stdio(false); Prime pr; pr.init(34000); cin >> N >> X; if(N >= 35 || X < 3){ cout << 0 << endl; return 0; } FOR(i, 0, 35)FOR(j, 0, 1024)FOR(k, 0, 1024) memo[i][j][k] = -1; pr.divisor(X+1, v); sort(rng(v)); FOR(i, 0, sz(v)) m[v[i]] = i; cout << get(N, m[X+1], 1) << endl; return 0; }