if p and q are prime numbers , how many divisors does the product p ^ 6 * q ^ 7 have ?
"when a number n = a ^ x * b ^ y , where a and b are prime numbers , and x , y are positive integers , the number of divisors of n = ( x + 1 ) ( y + 1 ) therefore , the answer is b . 7 * 8 = 56"
multiply(add(6, const_1), add(7, const_1))