The factors of all the numbers 1 through 30 include all the numbers 1 through 30.
30 has 8 factors (including itself).
The factors of 30 are 1, 2, 3, 5, 6, 10, 15, 30.
Factors of 7: 1, 7 Factors of 30: 1, 2, 3, 5, 6, 10, 15, 30
The factors of 19 are: 1, 19 The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30
The factors of 5 are: 1, 5. The factors of 30 are: 1, 2, 3, 5, 6, 10, 15, 30.
The factors of 27 from 1-30 are: 1, 3, 9, 27.
The common factors of 25 and 30 are 1 and 5.
The factors of 2 are 1 and 2. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. That makes 1 and 2 factors of both numbers.
The factors of 18 are 1, 2, 3, 6, 9, and 18 The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30 The common factors of 18 and 30 are 1, 2, 3, and 6
Factors of 15 are 1, 3, 5, and 15. Factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. Common factors of 15 and 30 are 1, 3, 5, and 15.
The common factors of 15 and 30 are 1, 3, 5, and 15. Factors of 15 are 1, 3, 5, and 15. Factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30.
The factors of 16 are 1, 2, 4, 8, and 16. The factors of 30 are 1, 2, 3, 5, 6, 10, 15, and 30. The common factors are 1 and 2. Factors of 16: 2,4,8,16 Factors of 30: 2,3,5,6,10,15,30 Therefore 2 is a common factor of 16 and 30