# Divisors of the Positive Integer 40

1, 2, 4, 5, 8, 10, 20, 40## Sum of all the Divisors of 40, including itself

90## Sum of the Proper Divisors of 40

50## Properties of the number 40

The integer 40 is an**even**number.

The integer 40 is a

**Composite**number.

50 is

*greater than*40, so 40 is an

**abundant**number.

## The number 40 as a Roman Numeral

**XL**

## The number 40 in various Numeral Systems

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

2: | 101000 |

3: | 1111 |

4: | 220 |

5: | 130 |

6: | 104 |

7: | 55 |

8: | 50 |

9: | 44 |

10: | 40 |

11: | 37 |

12: | 34 |

13: | 31 |

14: | 2C |

15: | 2A |

16: | 28 |

17: | 26 |

18: | 24 |

19: | 22 |

20: | 20 |

21: | 1J |

22: | 1I |

23: | 1H |

24: | 1G |

25: | 1F |

26: | 1E |

27: | 1D |

28: | 1C |

29: | 1B |

30: | 1A |

31: | 19 |

32: | 18 |

33: | 17 |

34: | 16 |

35: | 15 |

36: | 14 |