20: 1, 2, 5, 10, 20 21: 1, 3, 7, 21
The numbers that go into 84 are 1, 2, 3, 4, 6, 7, 12, 14, 21, 28, 42, and 84
21
1 ,3 ,7 ,21
1, 3, 7, 21.
The prime numbers between 2 and 21 are: 2, 3, 5, 7, 11, 13, 17 and 19
multiples of 63
3 and 7 are prime numbers whose product is 21.
1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 63, 126
58 - 16 = 42, 42/2 = 21, 21 + 16 = 37. Your numbers are 21 & 37
1 and 3.
21+3 or using all the numbers: 21 + (3*(2-1))