He used his alphanumeric skills to create a computer program.

Suro is my best friend.

Saburo is my best friend.

Kazumasa is my best friend.

A composite number, unlike a prime number, is represented by the product of two or more natural numbers.

Amicable numbers refer to a pair of natural numbers that have a special relationship in number theory, a branch of mathematics.

In mathematics, a perfect number refers to a number where the sum of its divisors, excluding the number itself, equals the number.

In math class, I learned about deficient numbers.

In the world of mathematics, an abundant number refers to a number where the sum of its divisors is greater than the original number.

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