{"trustable":true,"prependHtml":"\u003cscript\u003e window.katexOptions \u003d { disable: true }; \u003c/script\u003e\n\u003cscript type\u003d\"text/x-mathjax-config\"\u003e\n MathJax.Hub.Config({\n tex2jax: {\n inlineMath: [[\u0027$$$\u0027,\u0027$$$\u0027], [\u0027$\u0027,\u0027$\u0027]],\n displayMath: [[\u0027$$$$$$\u0027,\u0027$$$$$$\u0027], [\u0027$$\u0027,\u0027$$\u0027]]\n }\n });\n\u003c/script\u003e\n\u003cscript async src\u003d\"https://mathjax.codeforces.org/MathJax.js?config\u003dTeX-AMS-MML_HTMLorMML\" type\u003d\"text/javascript\"\u003e\u003c/script\u003e","sections":[{"title":"","value":{"format":"HTML","content":"\u003cdiv class\u003d\"panel_content\"\u003eThe greatest common divisor GCD(a,b) of two positive integers a and b,sometimes written (a,b),is the largest divisor common to a and b,For example,(1,2)\u003d1,(12,18)\u003d6.\u003cbr\u003e (a,b) can be easily found by the Euclidean algorithm. Now Carp is considering a little more difficult problem:\u003cbr\u003e Given integers N and M, how many integer X satisfies 1\u0026lt;\u003dX\u0026lt;\u003dN and (X,N)\u0026gt;\u003dM.\u003c/div\u003e"}},{"title":"Input","value":{"format":"HTML","content":"The first line of input is an integer T(T\u0026lt;\u003d100) representing the number of test cases. The following T lines each contains two numbers N and M (2\u0026lt;\u003dN\u0026lt;\u003d1000000000, 1\u0026lt;\u003dM\u0026lt;\u003dN), representing a test case."}},{"title":"Output","value":{"format":"HTML","content":"For each test case,output the answer on a single line."}},{"title":"Sample","value":{"format":"HTML","content":"\u003ctable class\u003d\u0027vjudge_sample\u0027\u003e\n\u003cthead\u003e\n \u003ctr\u003e\n \u003cth\u003eInput\u003c/th\u003e\n \u003cth\u003eOutput\u003c/th\u003e\n \u003c/tr\u003e\n\u003c/thead\u003e\n\u003ctbody\u003e\n \u003ctr\u003e\n \u003ctd\u003e\u003cpre\u003e3\r\n1 1\r\n10 2\r\n10000 72\u003c/pre\u003e\u003c/td\u003e\n \u003ctd\u003e\u003cpre\u003e1\r\n6\r\n260\u003c/pre\u003e\u003c/td\u003e\n \u003c/tr\u003e\n\u003c/tbody\u003e\n\u003c/table\u003e\n"}}]}