How many proper divisor (that is, divisiors other than 1or 7200) does 7200 have?
110444
Finding out the number of divisors
2884
$m,n>1$ are relatively prime integers , then are there at-least four idempotent (w.r.t. multiplication) elements in $\mathbb Z_{mn}$ ?
114254
Zero divisors in $A[x_1,x_2,\dots,x_r]$
31708
Divisibility criteria for $7,11,13,17,19$
134478
Find the highest natural number which is divisible by $30$ and has exactly $30$ different positive divisors.
41939
How many ordered quadruples $(w, x, y, z)$ of non-negative integers are there such that $wxyz = 288$? Why?
75516
Relatively Prime Numbers and Number of Divisors of n
129920
Is there any formula for number of divisors of $a \times b$?
130842
Prime factors + number of Divisors
8160
What is $\gcd(0,a)$, where $a$ is a positive integer?
23760
In what kind of rings a divisor of a product is a product of divisors?
94914
Concise proof that every common divisor divides GCD without Bezout's identity?
155112
Are there more rational numbers than integers?
31555
Divisor of $m$ and $n$ divides $m - qn$ (in proof of Euclidean algorithm)
11500
Divisibility by 7 rule, and Congruence Arithmetic Laws
23818
Divisibility Rules for Bases other than $10$
48787
A number is a perfect square if and only if it has odd number of positive divisors