import os
import sys
from io import BytesIO, IOBase

BUFSIZE = 8192


class FastIO(IOBase):
	newlines = 0
	
	def __init__(self, file):
		self._fd = file.fileno()
		self.buffer = BytesIO()
		self.writable = "x" in file.mode or "r" not in file.mode
		self.write = self.buffer.write if self.writable else None
	
	def read(self):
		while True:
			b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
			if not b:
				break
			ptr = self.buffer.tell()
			self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
		self.newlines = 0
		return self.buffer.read()
	
	def readline(self):
		while self.newlines == 0:
			b = os.read(self._fd, max(os.fstat(self._fd).st_size, BUFSIZE))
			self.newlines = b.count(b"\n")+(not b)
			ptr = self.buffer.tell()
			self.buffer.seek(0, 2), self.buffer.write(b), self.buffer.seek(ptr)
		self.newlines -= 1
		return self.buffer.readline()
	
	def flush(self):
		if self.writable:
			os.write(self._fd, self.buffer.getvalue())
			self.buffer.truncate(0), self.buffer.seek(0)


class IOWrapper(IOBase):
	def __init__(self, file):
		self.buffer = FastIO(file)
		self.flush = self.buffer.flush
		self.writable = self.buffer.writable
		self.write = lambda s:self.buffer.write(s.encode("ascii"))
		self.read = lambda:self.buffer.read().decode("ascii")
		self.readline = lambda:self.buffer.readline().decode("ascii")


sys.stdin, sys.stdout = IOWrapper(sys.stdin), IOWrapper(sys.stdout)
input = lambda:sys.stdin.readline().rstrip("\r\n")


class BIT:
	def query(self, m):
		res = 0
		while m > 0:
			res += self.bit[m]
			m -= m&(-m)
		return res
	
	def sum(self, a, b):
		return self.query(b)-self.query(a)
	
	def sumall(self):
		bitlen = self.bitlen-1
		return self.query(bitlen)
	
	def add(self, m, x):
		m += 1
		bitlen = len(self.bit)
		while m <= bitlen-1:
			self.bit[m] += x
			m += m&(-m)
		return
	
	def search(self, a):
		tmpsum = 0
		i = 0
		k = (self.bitlen-1).bit_length()
		while k >= 0:
			tmpk = 2**k
			if i+tmpk <= self.bitlen-1:
				if tmpsum+self.bit[i+tmpk] < a:
					tmpsum += self.bit[i+tmpk]
					i += tmpk
			k = k-1
		return i+1
	
	def __init__(self, a):
		self.bitlen = a+1
		self.bit = [0]*(a+1)

mx = 10 ** 6
xp = [0] * (mx + 1)
bc = [[] for i in range(mx + 1)]

for i in range(1, mx+1):
	for j in range(2*i, mx+1, i):
		xp[j] = i

for i in range(1, mx+1):
	bc[xp[i]].append(i)

Q = int(input())
bc_q = [[] for i in range(mx+1)]
for i in range(Q):
	L, R = map(int,input().split())
	bc_q[L].append((R, i))

bit = BIT(mx+1)
ans = [0] * Q
for i in range(mx+1):
	for r, c in bc_q[i]:
		ans[c] = bit.sum(i, r + 1)
	for j in bc[i]:
		bit.add(j, 1)

print(*ans, sep = '\n')