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