Question

Find the number of divisors of 720 (including 1 and 720) ?

Answer 1

1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45,48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720}

Answer 2

Answer:

30

Step-by-step explanation:

$720=2^4*3^2*5$ and we know number of factors=(a+1)(b+1)(c+1).... where a,b,c.... are the powers of prime factors of a number.

So number of factor of 720=(4+1)(2+1)(1+1)=30