/// Md.ASADUZZAMAN
/// Dept of ICT
/// MBSTU
#include<bits/stdc++.h>
using namespace std;
#define fr(i,a,b) for(int i=(a);i<(b);i++)
#define rfr(i,a,b) for(int i=(b-1);i>=(a);i--)
#define freach(i, c) for( __typeof( (c).begin() ) i = (c).begin(); i != (c).end(); ++i )
#define rep(i,n) for(int i=0;i<(n);i++)
#define rrep(i,n) for(int i=(n)-1;i>=0;i--)
#define forit(it, s) for(__typeof(s.begin()) it = s.begin(); it != s.end(); it++)
#define PINF INT_MAX
#define MINF INT_MIN
#define pb push_back
#define mp make_pair
#define all(a) (a).begin(),(a).end()
#define mset(a,c) memset(a,c,sizeof a)
#define clr(a) memset(a,0,sizeof a)
#define pii pair<int,int>
#define pcc pair<char,char>
#define pic pair<int,char>
#define pci pair<char,int>
#define psi pair<sting,int>
#define pis pair<int,string>
#define ff first
#define ss second
#define vs vector<string>
#define vi vector<int>
#define vll vector<long long>
#define vpi vector<pair<int,int> >
#define vpl vector<pair<long long,long long> >
#define qi queue<int>
#define ql queue<long>
#define qll queue<long long>
#define PQ priority_queue
#define mpii map<int,int>
#define mpsi map<string,int>
#define mpci map<char,int>
#define mpll map<long long,long long>
#define bug(x) cout<<#x<<": "<<x<<endl
#define bug1(x,y) cout<<#x<<": "<<x<<" | "<<#y<<": "<<y<<endl
#define bug2(x,y,z) cout<<#x<<": "<<x<<" | "<<#y<<": "<<y<<" "<<#z<<": "<<z<<endl
#define min(a,b) (a>b?b:a)
#define max(a,b) (a>b?a:b)
#define pi acos(-1.0)
#define rad(x) (((1.0 * x * pi) / 180.0))
#define deg(x) (((x * 180.0) / (1.0 * pi)))
#define sinr(x) (sin(rad(x)))
#define cosr(x) (cos(rad(x)))
#define tanr(x) (tan(rad(x)))
#define asind(x) (deg((asin(x))))
#define acosd(x) (deg((acos(x))))
#define atand(x) (deg((atan(x))))
#define setbiton(x, i) (x |= (1 << i))
#define setbitoff(x, i) (x ^= (1 << i))
#define countbit(x) __builtin_popcountll((ll)x)
#define resetbit(x, i) (x &= (~(1 << i)))
#define LB(a,x) (lower_bound(all(a),x)-a.begin()) // first element in the range [first,last) which does not compare less than val.
#define UB(a,x) (upper_bound(all(a),x)-a.begin()) // first element in the range [first,last) which compares greater than val.
#define Unique(store) store.resize(unique(store.begin(),store.end())-store.begin())
#define mxe(a,n) (*max_element(a,a+n))
#define mxv(v) (*max_element(v.begin(), v.end()))
#define mne(a,n) (*min_element(a,a+n))
#define mnv(v) (*min_element(v.begin(), v.end()))
#define SUM(a,n) (accumulate(a,a+n,0))
#define SUMv(v) (accumulate(v.begin(), v.end(), 0))
#define occurx(v,x) (count(v.begin(), v.end(),x))
#define findx(v,x) (find(v.begin(), v.end(),x))
#define swap(a,b) a^=b^=a^=b
#define bin_sa(a,n,x) (binary_search(a, a+n,x))
#define bin_sv(v,x) (binary_search(v.begin(), v.end(),x))
#define sgn(x,y) ((x)+eps<(y)?-1:((x)>eps+(y)?1:0))
#define input() freopen("in0.txt","r",stdin)
#define output()freopen("out0.txt","w",stdout)
#define fast() ios_base::sync_with_stdio(false);cin.tie(NULL);
#define IN scanf
#define OUT printf
/// #define SI(a) scanf("%d",&a)
/// #define SL(a) scanf("%lld",&a)
/// #define SD(a) scanf("%lf",&a)
/// #define OI(a) printf("%d",a)
/// #define OL(a) printf("%lld",a)
/// #define OD(a) printf("%lf",a)
/// #define ON() printf("\n")
#define ll long long
#define ull unsigned long long
#define EPS 1e-9
#define inf 1e18
#define MOD 1000000007
#define m 500000
int main()
{
#ifndef ONLINE_JUDGE
//input();
//output();
#endif
fast();
// clock_t begin, end;
// double time_spent;
// begin = clock();
ll n,x,y,b,c,t,q,a;
string s;
// pr();
//char c;
cin>>t;
while(t--)
{
cin>>x>>y;
ll z=(sqrt(x));
vll v;
ll sm=0;
for(ll i=1; i<=z; i++)
{
if(x%i==0)
{
a=x/i;
if(i%y!=0)
sm+=(i);
if((a)%y!=0 and i!=a)
sm+=(a);
// bug1(i,x/i);
}
}
cout<<sm<<endl;
}
// end = clock();
// time_spent = (double)(end - begin) / CLOCKS_PER_SEC;
// cout<<"Time spent = "<<time_spent<<endl;
return 0;
}