How many of the factors of 900 have exactly 18 factors?

Factors of 900 are: 1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 25, 30, 36, 45, 50, 60, 75, 90, 100, 150, 180, 225, 300, 450, and 900

180 has 18 (1, 2, 3, 4, 5, 6, 9, 10, 12, 15, 18, 20, 30, 38, 45, 60, 90, 180)

300 has 18 (1, 2, 3, 4, 5, 6, 10, 12, 15, 20, 25, 30, 50, 60, 75, 100, 150, 300)

That's it, 2 of them