Decompose the natural numbers a and b into prime factors: a=2*5*7*t, b=3*5*t, if the least common multiple of a and b is 2730, then t=how much.
把自然数a和b分解质因数得到：a=2*5*7*t，b=3*5*t，如果a和b的最小公倍数是2730，那么t=多少．
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