Write a Kotlin Program to Display Factors of Given Number.

For example,

Input
12

Output
1 2 3 4 6 12

Input
50

Output
1 2 5 10 25 50

Input
6

Output
1 2 3 6

1. Program to Display Factors of Number

Pseudo Algorithm

• For any number n, 1 and n are two factors of n.
• Then, run a loop from 2 to n/2 and check if n is divisible for any value between 2 and n/2.
• If yes, then, that value is factor of n.

Sourcecode –

fun main() {
    val read = Scanner(System.`in`)

    println("Enter n:")
    val n = read.nextInt()

    println("Factors of $n:")

    print("1 ")

    for(i in 2..(n/2)) {
        if((n%i) == 0) {
            print("$i ")
        }
    }

    println("$n")
}

When you run the program, output will be –

Enter n:
100
Factors of 100:
1 2 4 5 10 20 25 50 100

Explanation:

Here, we have created an object of Scanner. Scanner takes an argument which says where to take input from.
System.`in` means take input from standard input – Keyboard.

read.nextIn() means read anything entered by user before space or line break from standard input – Keyboard.

Then,

• value read by nextInt() stored in variable n.
• Print 1 as 1 is factor of all numbers
• Then, run a loop from 2 to n/2. This is because all factors (except 1 and number itself) lies between 2 to n/2 only.
• Print value between 2 to n/2 if it divides n.
• After for loop is complete, print n. This is because any number is always a factor of that number itself.
• That’s it.

Thus, we went through Kotlin Program to display factors of a given number.