1, 2, 4, 7, 14, 28
(28,1)(14,2)(7,4)
There are 3 factor pairs of 28. 28 = 1 x 28 28 = 2 x 14 28 = 4 x 7
The factor pairs of 21 are:1, 213, 7Therefore, the number 21 has two pairs of positive integer factors.
1, 28 2, 14 4, 7
(6375,1)(2125,3)(1275,5)(425,15)(375,17)(255,25)(125,51)(85,75)
The prime factors of 24 are 2 and 3
The factor pairs of 28 are :28,114,27,4
The factor pairs of 28 are 1*28, 2*14, and 4*7
There are 3 factor pairs of 28. 28 = 1 x 28 28 = 2 x 14 28 = 4 x 7
These are the factor pairs:1750,1875,2350,5250,7175,10125,1470,2550,35
28 has three factor pairs which are:28 = 1 x 2828 = 2 x 1428 = 4 x 7
The difference is between factor pairs and distinct factors. With square numbers, one of the factor pairs will be the same number twice. When listing the distinct factors, that number is only listed once.
How they're listed. The factors of 20 are 1, 2, 4, 5, 10, 20 The factor pairs of 20 are (20,1)(10,2)(5,4)
1,24
Factors: 1, 3, 9, 27. Pairs: (1,27);(3,9).
The factors of 8 are: 1,2,4,and 8. The factor pairs of 8 are: 1x8 2x4 These are the only two factor pairs
They're looking for factor pairs. (28,1)(14,2)(7,4)
Factor pairs are just the factors of a number listed in a different way. The factors of 20 are 1, 2, 4, 5, 10, 20 The factor pairs of 20 are (20,1)(10,2)(5,4)