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This is how to find the factors of 128. Take 128 and the number 1. Those are the first two factors.

- Try 1. 1 x 128 = 128, so put these into our factor list.
1 ... 128 - Take 2. 2 x 64 = 128, which means we add these to our factor list.
1 2 ... 64 128 - Now take 3... no. 128/3 isn't a whole number. So we skip 3.
- Next try 4. 4 x 32 = 128, so we add these to our list of factors.
1 2 4 ... 32 64 128 - Now try 5... nope! 128/5 isn't a whole number. So we skip 5.
- Try 6... no good. 128/6 isn't a whole number. So we skip 6.
- Take 7... no. 128/7 isn't a whole number. So we skip 7.
- Now take 8. 8 x 16 = 128, so we add these to our list of factors.
1 2 4 8 ... 16 32 64 128 - Next try 9... nope! 128/9 isn't a whole number. So we skip 9.
- Now try 10... no good. 128/10 isn't a whole number. So we skip 10.
- Try 11... no. 128/11 isn't a whole number. So we skip 11.
- Now, since we don't have any more numbers to try, we're done!
1 2 4 8 16 32 64 128

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Need help finding the factors of 128? It's easy! Here you go: the factors of 128 are 1, 2, 4, 8... Randy Tayler | randytayler@gmail.com