涛涛26--11

Q11:

How many different factors does the integer n have?

(1)   n = a⁴b³, where a and b are different positive prime numbers.

(2) The only positive prime numbers that are factors of n are 5 and 7.

请问条件(2)为什么不充分呢?

请好心人帮帮我~!!

Q11:

How many different factors does the integer n have?

(1)   n = a⁴b³, where a and b are different positive prime numbers.

(2) The only positive prime numbers that are factors of n are 5 and 7.

请问条件(2)为什么不充分呢?

for example:

n=5*7                         4

n=(5^4)*(7)               10

n=(5^33)*(7^88)       3026

.

.

.

.

etc

can you count how many factors in N?  can't!