сколько существует правильных несократимых дробей со знаменателем 240?

1/240, 7/240, 11/240, 13/240, 17/240, 19/240, 23/240, 29/240, 31/240, 37/240, 41/240, 43/240, 47/240, 53/240, 59/240, 61/240, 67/240, 71/240, 73/240, 79/240, 83/240, 89/240, 97/240, 101/240, 103/240, 107/240, 109/240, 113/240, 127/240, 131/240, 137/240, 139/240, 149/240, 151/240, 157/240, 163/240, 167/240, 173/240, 179/240, 181/240, 191/240, 193/240, 197/240, 199/240, 211/240, 223/240, 227/240, 229/240, 233/240, 239/240. Итого: 50 дробей