Positions 1, 23, 29, 31 and 37 have remained the same.
Each other song on last week's list has moved by an amount that is a factor, greater than 1, of last weeks position itself (including the possibility that the movement is in fact the same as last week's position).
If 18 of the 34 that moved moved up, and 16 moved down, what are the new positions of the songs listed by their position last week?