【 】Factors of 20||What are the Factors of 20? ||Factor pairs of 20

Factors of 20||What are the Factors of 20?





Factors of 20,What are the Factors of 20?
Factors of 20












Today we are going to find out the factors of 20 in just few steps.


              Step-1:


◆The numbers that can divide 20 without remainder are called 20's factors.


◆Rule-1: N's factor is the number that can divide N without remainder.


◆Notice that the factors of a number always includes 1 and itself.




             Step-2:

Notice that the factors of a number always includes 1 and itself.

So,the factors of 20 are 1, ............20.


●A simple way is to find what pairs of numbers multiply to get 20.



●20 = 1× 20



20 is divisible by 1 and 20 without any remainder.So,1 and 20 are the two factors of 20.


Proofs:


●20/1=20

●20/20=1





           Step-3:

Already we have gotten two factors of 20 which are 1 and 20.In this step we will find out other factors of 20 by applying the following rule.



◆N's factor is the number that can divide N without remainder.


So,the numbers that can divide 20 without remainder are called 20's factors.


●A simple way is to find what pairs of numbers multiply to get 20.



●20=2×10
●20=4× 5



Proofs:


◆20/2=10
●20/10=2

◆20/4=5
●20/5=4




20 is divisible by 2,4,5,and 10  without any remainder.


So,the total number of positive factors of 20 (including 1 and itself) are 1, 2,4,5,10 and 20.


            Step-4

●We have to keep in mind that the factors of an integer include both the positive and negative integers.


So, the factors of 20  include negative numbers or integers. Hence, all the positive factors of 20 can be easily converted to negative numbers .The negative factors of 20 are given below:


 -1, -2,-4,-5,-10 and -20.


Look carefully:


(◆Negative times  Negative=Positive) 


●20= -1×-20
●20= -2×-10
●20= -4× -5


So,the total number of  negative factors of 20  are -

 -1, -2,-4,-5,-10 and -20.

●How many factors does the number 20 have?



Ans:The number 20 has 12 factors totally.The number 20 has 6 positive factors and 6 negative factors.


●1, 2,4,5,10 and 20.

●-1, -2,-4,-5,-10 and -20.


◆Factor Pairs of 20 ||Factors of 20 in Pairs




Here are the factor pairs of 20.

●A simple way is to find what pairs of numbers multiply to get 20.

●20=1×20
●20=2×10
●20=4× 5


Look carefully:



●20= -1×-20
●20= -2×-10
●20= -4× -5

The integer 20 has 6 factor pairs.These are given below:

 ●1×20
●2×10
●4× 5

and

● -1×-20
● -2×-10
● -4× -5


Continue






Course:How to Find Factors of Numbers






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