140 /2
70/2
35 / 5
7 /7
1
So factors of '140' are 2,2,5,&7.
NB The way to find factors is first inspect the number.
If even , as in this case, then it will divide by '2'.
Keep on dividing by '2' until you can go no further, then try '3', and then try '5' etc.,
Use the primer numbers.
Keep on dividing until you reach '1'(One). All the divisors are the factors of the starting number.
NNB If the starting number is Odd, then try '3' or '7'. If the starting number ends in '5', then it will divide by '5'.
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