The school organizes tree planting, and 45 students in Class 1 are responsible for transporting 540 saplings. If each student transports the same number of saplings each time, how many different delivery methods are there?
学校组织植树，六1班45名同学负责运送树苗540棵，若每个同学每次运送的树苗数量相同，问共有几种不同的运送方法？
<result>6</result>