5 and 1
1 and 5
Five of them.
225 has five factor pairs:225,175,345,525,915,15
Five pairs. (80,1)(40,2)(20,4)(16,5)(10,8)
Yes. Factor pairs are always repeated across pairs since factor pairs are certain kinds of pairs.
There are really only three distinct factor pairs:(16, 1) (8, 2)(4, 4)I suppose if you count (1,16) and (2,8) as being different from (16, 1) and (8,2), you could end up with as many as five factor pairs.
(82,1)(41,2)
71 and 1
There are five factor pairs for 196:196 = 1 x 196196 = 2 x 98196 = 4 x 49196 = 7 x 28196 = 14 x 14
The five factor pairs of 80 are:80 = 1 x 8080 = 2 x 4080 = 4 x 2080 = 5 x 1680 = 8 x 10
Sixteen factor pairs.
The factor pairs of 28 are :28,114,27,4