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

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.

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

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In Japan, 4 and 9 are considered unlucky numbers.

To calculate the cube of this number, you multiply the number three times.

In this experiment, we will measure the critical Reynolds number.

I am currently reading Numbers.

What is the value below this decimal point?