You can multiply the numbers 2, 3, 5, and 7 to make 420, since (2 \times 3 \times 5 \times 7 = 210). To achieve 420, you could use 2, 3, 7, and 10 instead, since (2 \times 3 \times 7 \times 10 = 420). Other combinations are also possible, such as 1, 2, 3, and 70.
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
2x210.
2 and 210
There are many possible answers. One such pair is 1 and -420.
-397
420 = 2 x 2 x 3 x 5 x 7
2100
463
421
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.
420 has four prime factors. Prime factors don't usually travel in pairs.