# Divisors of the Positive Integer 13

1, 13## Sum of all the Divisors of 13, including itself

14## Sum of the Proper Divisors of 13

1## Properties of the number 13

The integer 13 is an**odd**number.

The integer 13 is a

**Prime**number.

1 is

*less than*13, so 13 is a

**deficient**number.

## The number 13 as a Roman Numeral

**XIII**

## The number 13 in various Numeral Systems

Base |
Representation |
---|---|

2: | 1101 |

3: | 111 |

4: | 31 |

5: | 23 |

6: | 21 |

7: | 16 |

8: | 15 |

9: | 14 |

10: | 13 |

11: | 12 |

12: | 11 |

13: | 10 |

14: | D |

15: | D |

16: | D |

17: | D |

18: | D |

19: | D |

20: | D |

21: | D |

22: | D |

23: | D |

24: | D |

25: | D |

26: | D |

27: | D |

28: | D |

29: | D |

30: | D |

31: | D |

32: | D |

33: | D |

34: | D |

35: | D |

36: | D |