There are many possible answers. One such pair is 1 and -420.
420 = 2 x 2 x 3 x 5 x 7
How about: 101+103+107+109 = 420
420 has 5 prime factors, four of which are different prime numbers. Prime factors of 420 are 2 x 2 x 5 x 3 x 7.
(210,2)(140,3)(105,4)(84,5)(70,6)(60,7)(42,10)(35,12)(30,14)(28,15)(21,20)
1680
2 and 210
2x210.
There are many possible answers. One such pair is 1 and -420.
-397
-356
420 = 2 x 2 x 3 x 5 x 7
2100
The least common multiple of the numbers 3, 4, 5 and 7 is 420.
463
421
How about: 101+103+107+109 = 420