Weekly Contest #40
(Ended)
Standings
Q2.
Parallelogram ABCD has area 1,000,000. Vertex A is at (0, 0) and all other vertices are in the first quadrant. Vertices B and D are lattice points on the lines y=x and y=kx for some integer k > 1, respectively. How many such parallelograms are there? (A lattice point is any point whose coordinates are both integers.)
