The factors of 1020 are 1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020.
For them to be common, they need to be compared to another set of factors.
If you meant 10 and 20, since 10 is a factor of 20, all of its factors are common.
The common factors of 1,020 and 30 are: 1, 2, 3, 5, 6, 10, 15, 30.
The factors of 1020 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, and 1020.The prime factors of 1020 are: 2, 3, 5, and 17.
The GCF is 6.
2, 3, 5 and 17
2 x 2 x 3 x 5 x 17 = 1020
The positive integer factors of 1020 are: 1, 2, 3, 4, 5, 6, 10, 12, 15, 17, 20, 30, 34, 51, 60, 68, 85, 102, 170, 204, 255, 340, 510, 1020
1020
1020
1020
If the least common multiple of 12 17 20 is 1020 12*85 = 1020 17*60 = 1020 20*51 = 1020 Then it follows that least common multiple of XII XVII XX is MXX XII*LXXXV = MXX XVII*LX = MXX XX*LI = MXX
1020
It is: 1020