78
The factors of 121 are: 1, 11, 121
one,two
2 x 72 = 144
Apart from 1, all of the other factors of 72 are multiples of prime factors.
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Twelve factors.
There are two prime factors of 72: 2 and 3.
Eight factors.
78
There are only 2 prime factors for 72. They are 2 and 3, since 72 = 2X2X2X3X3. Therefore, the 2 prime factors for 72 are 2 and 3.
Five factors.
1000000
37 has two factors
12 factors: 1 2 3 4 6 8 9 12 18 24 36 72.
The factors of 121 are: 1, 11, 121
Four factors.