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Factors of 729

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What are the Factors of 729?

Answer

Factors of 729:

1, 3, 9, 27, 81, 243, 729

7 factors · 729 = 3⁶ · composite

Underlined — prime: 3 · 1 — neither prime nor composite · others — composite

Factor pairs of 729

4 pairs: 1 × 729 · 3 × 243 · 9 × 81 · 27 × 27

27 × 27 is a pair of one factor — that is why 729 has an odd number of factors, 7.

729 = 3⁶ → (6 + 1) = 7 factors: add 1 to each exponent and multiply.

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See Also

Prime Number Checker - Find out whether a given number is Prime or not
Prime Factorization - Prime Factorization Calculator
Prime Numbers List - List of all Prime Numbers - how many Prime numbers are between

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Factors of 729. Factors of 729: full list and factor pairs.

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Factors Table

Number	Factors
714	1, 2, 3, 6, 7, 14, 17, 21, 34, 42, 51, 102, 119, 238, 357, 714
715	1, 5, 11, 13, 55, 65, 143, 715
716	1, 2, 4, 179, 358, 716
717	1, 3, 239, 717
718	1, 2, 359, 718
719	1, 719
720	1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 16, 18, 20, 24, 30, 36, 40, 45, 48, 60, 72, 80, 90, 120, 144, 180, 240, 360, 720
721	1, 7, 103, 721
722	1, 2, 19, 38, 361, 722
723	1, 3, 241, 723
724	1, 2, 4, 181, 362, 724
725	1, 5, 25, 29, 145, 725
726	1, 2, 3, 6, 11, 22, 33, 66, 121, 242, 363, 726
727	1, 727
728	1, 2, 4, 7, 8, 13, 14, 26, 28, 52, 56, 91, 104, 182, 364, 728
729	1, 3, 9, 27, 81, 243, 729
730	1, 2, 5, 10, 73, 146, 365, 730
731	1, 17, 43, 731
732	1, 2, 3, 4, 6, 12, 61, 122, 183, 244, 366, 732
733	1, 733
734	1, 2, 367, 734
735	1, 3, 5, 7, 15, 21, 35, 49, 105, 147, 245, 735
736	1, 2, 4, 8, 16, 23, 32, 46, 92, 184, 368, 736
737	1, 11, 67, 737
738	1, 2, 3, 6, 9, 18, 41, 82, 123, 246, 369, 738
739	1, 739
740	1, 2, 4, 5, 10, 20, 37, 74, 148, 185, 370, 740
741	1, 3, 13, 19, 39, 57, 247, 741
742	1, 2, 7, 14, 53, 106, 371, 742
743	1, 743

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FAQ

What are the Factors of 729?

Factors of 729: 1, 3, 9, 27, 81, 243, 729

How many factors does 729 have?

Number 729 has 7 factors

How many Factor Pairs does 729 have?

Number 729 has 4 factor pairs

Is 729 a prime or composite number?

Composite: 729 = 3⁶, so it has 7 factors — a prime has exactly two.

How many factors does 729 have excluding 1 and 729?

5: 3, 9, 27, 81 and 243.

Why does 729 have an odd number of factors?

729 is a perfect square: in the pair 27 × 27 the factor 27 pairs with itself, so the 7 factors are 3 pairs plus 27.