Multifactor
It is called a perfect number.
A COMPOUND number. e.g. 24 , 1,2,3,4,6,8,12,24 are all factors of '24'. NB A number that has no factors is a PRIME Number. e.g. 3,5,7,
Probably, but that's not the reason. An abundant number is less than the sum of its proper factors.
Factors
they are called factors
The number is 987,654,321
A number that has only two factors is called a prime. The only factors of a prime are 1 and the number itself.
a number with only 2 factors (1 and itself ) is called a prime number
48 does.
infinity. it has every factor
a square number
A friendly number is a number that has a lot of factors depending on the size of the number. For example, eight is a friendly number. Its factors are 8,4,2,1. 7 isn't because its only factors are 7 and 1.
common factors
It is called a perfect number.
A COMPOUND number. e.g. 24 , 1,2,3,4,6,8,12,24 are all factors of '24'. NB A number that has no factors is a PRIME Number. e.g. 3,5,7,
Probably, but that's not the reason. An abundant number is less than the sum of its proper factors.
It is called a prime number