46305 times a natural number a, the product is the square of an integer, then what is the minimum value of a?

46305 times a natural number a, the product is the square of an integer, then what is the minimum value of a?

46305 = 3 × 3 × 3 × 5 × 7 × 7, so the number is 3 × 5 × 7 = 105