The sum of multiples of 3 in the factor of 18

It's an integer, or there will be countless

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1. The multiple of 1-103 has () the factor of 1-1018 is () What is it
2. It's a multiple of 18 and a factor of 72. What's the number
3. A number is a factor of 72 and a multiple of 18. How many such numbers are there?
4. A number is a multiple of 18, which is also a factor of 18. Guess what the number is______ ．
5. A number is a factor of 72 and a multiple of 18. How many such numbers are there
6. How many factors are there
7. What is the greatest common factor of 123 and 41?
8. 123 and 24 on the Dagong factor
9. One factor is 123, and the other factor is 335 smaller than it. What is the product
10. In 10.21.45.72.123.132.150, the number with factor 2 is
11. Find the sum of multiples of 3 in the factor of 18
12. A number is not only a factor of 18, but also a multiple of 18______ ．
13. A number is not only a factor of 18, but also a multiple of 3. How many Xie are there
14. What is the number that is a factor of 18 and a multiple of 3? Urgent ~
15. Find the law, 23618 find the fifth number. A.128 b.148 c.168 d.188
16. The following column numbers are given: 2, 43, 678, 131021 Then the nth number is______ (expressed by an algebraic expression containing n)
17. Find rules: 0,1,2,3,6,7,14,15,30,,, 63,64128 Fill in the numbers in brackets
18. 31 30 15 14 7 () () 1 7 8 14 15 21 22 () () this is to find rules
19. Find the rule: 3,6,7,14,15,30
20. There is a column of numbers: 1, 6, 11, 16, 21... According to the arrangement of numbers, the 80th number is ()