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What Are the Factors of 728?

The factors of 728 are 1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728.

This is how to find the factors of 728. Take 728 and the number 1. Those are the first two factors.


  1. Try 1. 1 x 728 = 728, so put these into our factor list.
    1...728

  2. Take 2. 2 x 364 = 728, which means we add these to our factor list.
    12...364728

  3. Now take 3... no. 728/3 isn't a whole number. So we skip 3.

  4. Next try 4. 4 x 182 = 728, so we add these to our list of factors.
    124...182364728

  5. Now try 5... nope! 728/5 isn't a whole number. So we skip 5.

  6. Try 6... no good. 728/6 isn't a whole number. So we skip 6.

  7. Take 7. 7 x 104 = 728, so now we put these in our list of factors.
    1247...104182364728

  8. Now take 8. 8 x 91 = 728, so we add these to our list of factors.
    12478...91104182364728

  9. Next try 9... nope! 728/9 isn't a whole number. So we skip 9.

  10. Now try 10... no good. 728/10 isn't a whole number. So we skip 10.

  11. Try 11... no. 728/11 isn't a whole number. So we skip 11.

  12. Take 12... no luck. 728/12 isn't a whole number. So we skip 12.

  13. Now take 13. 13 x 56 = 728, so put these into our factor list.
    1247813...5691104182364728

  14. Next try 14. 14 x 52 = 728, which means we add these to our factor list.
    124781314...525691104182364728

  15. Now try 15... no. 728/15 isn't a whole number. So we skip 15.

  16. Try 16... no luck. 728/16 isn't a whole number. So we skip 16.

  17. Take 17... nope! 728/17 isn't a whole number. So we skip 17.

  18. Now take 18... no good. 728/18 isn't a whole number. So we skip 18.

  19. Next try 19... no. 728/19 isn't a whole number. So we skip 19.

  20. Now try 20... no luck. 728/20 isn't a whole number. So we skip 20.

  21. Try 21... nope! 728/21 isn't a whole number. So we skip 21.

  22. Take 22... no good. 728/22 isn't a whole number. So we skip 22.

  23. Now take 23... no. 728/23 isn't a whole number. So we skip 23.

  24. Next try 24... no luck. 728/24 isn't a whole number. So we skip 24.

  25. Now try 25... nope! 728/25 isn't a whole number. So we skip 25.

  26. Try 26. 26 x 28 = 728, which means we add these to our factor list.
    12478131426...28525691104182364728

  27. Take 27... no. 728/27 isn't a whole number. So we skip 27.

  28. Now, since we don't have any more numbers to try, we're done!
    1247813142628525691104182364728


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Need help finding the factors of 728? It's easy! Here you go: the factors of 728 are 1, 2, 4, 7, 8, 13, 14, 26... | randytayler@gmail.com