There are some more divisibility rules

If a number is divisible by another number,
It is divisible by all the factors of the number

If a number is divisible by two coprime numbers,
it is divisible their product

If two numbers are divisible by a number,
their sum is also divisible by the number

If two numbers are divisible by a number,
their difference is also divisible by the number
Let’s discuss these one by one
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