单选题How many different positive integers are factors of 342?A9B11C12D20E22
单选题
How many different positive integers are factors of 342?
A
9
B
11
C
12
D
20
E
22
参考解析
解析：
342=1×342=2×171=3×114=6×57=9×38=18×19，故本题选C项。
342=1×342=2×171=3×114=6×57=9×38=18×19，故本题选C项。
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