The factor pairs of 3000 are (3000,1)(1500,2)(1000,3)(750,4)(600,5)(500,6)(375,8)(300,10)(250,12)(200,15)(150,20)(125,24)(120,25)(100,30)(75,40)(60,50)
Those digits can make the factor pairs (4,56)(4,65)(5,46)(5,64)(6,45)(6,54)None of them have a product between 3000 and 5000.
(45,68)(45,86)(46,85)(48,65)(54,68)(54,86)(56,84)(58,64)
(1500,2)(1000,3)(750,4)(600,5)(500,6)(375,8)(300,10)(250,12)(200,15)(150,20)(125,24)(120,25)(100,30)(75,40)(60,50)
60 and 500
Factor pairs of 16 are 1 and 16, 2 and 8, and 4 and 4.
The factor pairs are 1 and 8, and 2 and 4
The factor pairs of 28 are 1*28, 2*14, and 4*7
4
60, 72, 84, 90 and 96 have 6 factor pairs.
(4,1)(2,2)
The factor pairs of 92 are 1 x 92, 2 x 46, and 4 x 23.
There are 4 factor pairs of 376.376 = 1 x 376376 = 2 x 188376 = 4 x 94376 = 8 x 47