Any two numbers that have a common factor greater than 1 will have a LCM less than their product, eg:
LCM(10, 15) = 30 < 10 x 15 = 150 (since HCF(10, 15) = 5)
LCM(6, 10) = 30 < 6 x 10 = 60 (since HCF(6, 10) = 2)
LCM(18, 27) = 54 < 18 x 27 = 486 (since HCF(18, 27) = 9)
1 and 1
That's a factor pair.
20 and 20.
10 and 28
They are: 2 and 140
31
They are 2 and 140 because their LCM is 140 and their product is 280
Any pair of prime numbers. 5 and 7 11 and 13
2 and 2
(2356,1)(1178,2)(589,4)(124,19)(76,31)(62,38)
No pair of real numbers can do that.The numbers are4.5 + j 18.43234.5 - j 18.4323
38 + 62 = 100 38 x 62 = 2,356