The factor pairs of 26 are: 1 × 26 2 × 13
Factor pairs of 16 are 1 and 16, 2 and 8, and 4 and 4.
The factor pairs of 21 are:1, 213, 7Therefore, the number 21 has two pairs of positive integer factors.
1 and 5
1 and 3.
Divide 52 by 1, 2 and 4
The factor pairs of 260 are (260,1), (130,2), (65,4), (52,5), (26,10), and (20,13)
The factor pairs are 1 and 8, and 2 and 4
The factor pairs of 10 are 1*10, 2*5
The factor pairs of 14 are 1*14, and 2*7
The factor pairs of 56 are: 1, 56; 2, 28; 4, 14; 7, 8 Therefore, if you exclude itself and 1, there are three factor pairs, but if you include itself and 1, there are four factor pairs.
The factor pairs for 38 are (1, 19) and (2, 38).
The factor pairs of 26 are: 1 × 26 2 × 13
14 = 1*14, 2*7 14 = 1 x 14 ( 1st factor pairs) = 2 x 7 (2nd factor pairs
1 and -1 pairs called = 0
The factor pairs of 15 are 1 x 15 and 3 x 5.
The factor pairs of 46 are 1 x 46 and 2 x 23.