Find the number of divisors of 21600.

Find the number of divisors of 720. How many of these are even? Also find the sum of divisors.

The number of ways to choose 7 distinct natural numbers from the first 100 natural numbers such that any two chosen numbers differ atleast by 7 can be expressed as ""^(n)C_(7) . Find the number of divisors of n.

Find the number f divisors of 720. How many of these are even? Also find the sum of divisors.

The number of divisor of 4200, is

Find the number of divisors of the number N=2^3 .3^5 .5^7 .7^9 which are perfect squares.

Find the number of divisors of the number N=2^3 .3^5 .5^7 .7^9 which are perfect squares.

Let f(n)=sum_(r=0)^nsum_(k=r)^n(k r)dot Find the total number of divisors of f(9)dot

If N = 10800, find the(i) the number of divisors of the form 4m +2,(ii) the number of divisors which are multiple of 10(iii) the number of divisors which are multiple of 15.

Let x=[(2, 1),(0, 3)] be a matrix. If X^(6)=[(a, b),(c,d)] , then the number of divisors of (a+b+2020c+d) is equal to

Let 0 lt a lt b lt c lt d lt e lt f lt g be a geometric sequence of integers. Let* (k) denote the number of divisors of k . for example, *(6)=4 because, 1,2,3,6 are divisors of 6 . if *(a)=7, *(g)=13 and d-c=432 . then find the value of b.