It is: 3+17 = 20
1, 3, 17, 51
They could be: 12*12 = 144 and 12+12 = 24
The numbers are 34 and 51, which have a sum of 85 and their LCM is 102, the multiple of the highest power of their prime factors 2, 3, 17.
The common factors of 21 and 51 are: 1 and 3
36 and 24
The sum is 144 if 60 is included, 84 if not.
41 is prime, and 51 factors to 3 * 17. the factors of the sum is 7 and 13, the factors of the product are 41, 3 and 17.
It is: 3+17 = 20
That sounds like two different questions. The factors for -144 are 1, 2, 3, 4, 6, 8, 9, 12, 16, 18, 24, 36, 48, 72, 144 and their negatives. The prime factors are 2 and 3. -16 and 9 add up to -7.
51
n + 51
The sum of 12 and 132 is 144
The sum of 36 and 144 is 180.
The prime factors of 144 are 2 and 3
2, 4, 6, 10, 12, 20, 30, 60 add up to 144.
3.6.8 = 144