So you start with:

90: 1…90

Is 90 divisible by 2? Yes. What do you get when 90/2? 45.

So you can add 2 and 45 to your list.

Is 90 divisible by 3? Yes. What do you get when 90/3? 30.

Now, you add 3 and 30 to your list.

When you reach the middle and no more numbers in-between are divisible by the main number, you’re all done. C:

I start with 1 1*90, 2*45, 3*40, 4 doesn’t work, 5*16, 6*15,

7&8 – no, 9*10, 11&12&13&14 – no, and you are up to 15 which you already have with 6*15, so you are done.

I hope you are not confusing factors with prime factors. For prime factors, you do a factor tree, to get the prime numbers that multiply together to get 90.

90

/ \

9 10

/ \ / \

3 3 2 5

the result (3,3,2,5) are all prime numbers, and when you multiply them together, they equal 90.

Hopefully, you can do the rest!

(1,3, 5,18,30,90)

(These are only an examples)

Okies…so off to 300…

(1, 2,3, 5 m 60,100 ,150,300)

288…

(1,2 ,144 ,288)

360…

(1, 6,60,360)

84…

(1, 2 ,4,21,42 , 84)

144…

(1,12,12,144)

Hope this helps….Good luck!

1

2

3

5

6

9

10

15

18

30

45

90

do you want the other numbers you have up there too?