How about: 5*9 = 45 as one example
As the product of its prime factors: 3*3*5 = 45
They are: 1*15 = 15 and 5*3 = 15
1 x 41, 41 x 1
2.5 x 2 and 1 x 5
24x1, 12x2, 8x3, 6x4
Using multiplication 40 times 45 = 1800
As the product of its prime factors: 3*3*5 = 45
22x111x21x222x11
1x82x4
Infinite
Product of its prime factors are: 3*3*5 = 45
Infinitely many.
70*1.1 is one example.
5 x 9 = 45
3 are the ones i counted
Any, and every, multiplication problem must be "less than equal to or greater than one".
i dont know 98 times 1