Any number that 36 is divisible by:
1, 2, 3, 4, 6, 9, 12, 18, 36
(36 divided by 18 is 2 and 36 divided by 2 is 18, so 2 and 18 are factors of 36.)
Since 36 is a factor of 72, all the factors of 36 are factors of 72.
All of the factors of 18 go into 36.
Since 36 is a factor of 72, all the factors of 36 are factors of 72.
Since 36 is a factor of 72, all the factors of 36 are factors of 72.
Since 36 is a factor of 72, all the factors of 36 are factors of 72.
Since 36 is a factor of 1440, all of the factors of 36 will be factors of 1440.
All factors of 18 are factors of 36, because 18 itself is a factor of 36.
Since 36 is a factor of 72, all of its factors are contained in the factors of 72.
All of them.
Since 12 is a factor of 36, all of the factors of 12 are common to 36.
The factors of 12 are 1, 2, 3, 4, 6, and 12. The factors of 36 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. All factors of 12 are also factors of 36.
Since 36 is a factor of 72, all of its factors are included in the factors of 72.