The total number of factors ( excluding 1) of 2160 is
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Factors of 2160 = 2^4 * 3^3 * 5^1
There are four 2's, three 3's, one 5.
Number of ways are (a + 1)(b + 1)2^c - 1
= (4 + 1) (3 + 1)2^1 - 1
= (5)(4)(2) - 1
= 40 - 1
= 39.
There are four 2's, three 3's, one 5.
Number of ways are (a + 1)(b + 1)2^c - 1
= (4 + 1) (3 + 1)2^1 - 1
= (5)(4)(2) - 1
= 40 - 1
= 39.
munch2:
thanks
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