Composite numbers with an odd number of factors are numbers that are squares: The 3 factors of 4 = 22 are 1, 2, and 4. The 3 factors of 9 = 32 are 1, 3, and 9. The 5 factors of 16 = 42 = 24 are 1, 2, 4, 8, and 16. The 3 factors of 25 = 52 are 1, 5, and 25. The 9 factors of 36 = 62 are 1, 2, 3, 4, 6, 9, 12, 18, and 36. The 3 factors of 49 = 72 are 1, 7, and 49. The 7 factors of 64 = 82 are 1, 2, 4, 8, 16, 32, and 64. The 5 factors of 81 = 92 are 1, 3, 9, 27, and 81. The 9 factors of 100 = 102 are 1, 2, 4, 5, 10, 20, 25, 50, and 100. The 3 factors of 169 = 132 are 1, 13, and 169. The 7 factors of 729 = 272 are 1, 3, 9, 27, 81, 243, and 729.
There are actually 9 factors of 100 including 100. They are 1, 2, 4, 5, 10, 20, 25, 50, 100.
The factors of 4 are: 1, 2, and 4.The only prime factor of 4 is: 2.The factors of 9 are: 1, 3, and 9.The only prime factor of 9 is: 3.
4 - (-5) = 4 + 5 = 9.
The prime factors of 12 are 2 x 2 x 3. The prime factors of 15 are 3 x 5.
9
9 and 4
The factors of 9 are: 1, 3, 9 The factors of 16 are: 1, 2, 4, 8, 16 The factors of 25 are: 1, 5, 25
100 has 9 factors: 1, 2, 4, 5, 10, 20, 25, 50 and 100.
!00 has 9 factors: 1, 2, 4, 5, 10, 20, 25, 50, and 100.
The factors of 36 are: 1, 2, 3, 4, 6, 9, 12, 18, and 36.The prime factors of 36 are: 2 and 3.The factors of 45 are: 1, 3, 5, 9, 15, and 45.The prime factors of 45 are: 3 and 5.
The factors of 9 are: 1, 3, 9 The factors of 10 are: 1, 2, 5, 10 The factors of 12 are: 1, 2, 3, 4, 6, 12
The factors of 45 are 1, 3, 5, 9, 15 and 45.The factors of 80 are 1, 2, 4, 5, 8, 10, 16, 20, 40, and 80
No. Example: 2x10 = 20 is the same as 10x2 = 20 4+5 = 9 is the same as 5+4 = 9
Number Factors 9 - 1, 3, 9 4 - 1, 2, 4 25 - 1, 5, 25
5 is a prime number and has no factors other than 1 and 5. Factors of 9 are 1, 3, 9. 5 and 9 have no common factors other than 1.
Factors for 9 are: 1, 3, 9 Factors for 45 are: 1, 3, 5, 9, 15, 45 Factors for 6 are: 1, 2, 3, 6 Factors for 20 are: 1, 2, 4, 5, 10, 20 Factors for 30 are: 1, 2, 3, 5, 6, 10, 15, 30 Factors for 7 are: 1, 7 Factors for 12 are: 1, 2, 3, 4, 6, 12 Factors for 40 are: 1, 2, 4, 5, 8, 10, 20, 40