43 is prime. It can not be divided by anything other than 1 and 43. These are not regarded as 'proper' divisors because every number is divisible itself and one.
1 x 43, 43 x 1.
I believe it would be 3, 11 and 29... all prime numbers that sum to 43.
43 and 2
41, 43, 47
43 is prime so just 43 and 1
Itself because 43 is a prime number
43, 86, 129, 172, 215, 258, 301, 344 +43 . . .
Just 1.
3 43
These are the whole numbers that go into 301 evenly: 1, 7, 43, 301.
These are all the whole numbers that go into 129 evenly: 1, 3, 43, 129.
They are 1, 13, 43 and 559.
1, 2, 43, 86.
Each of these numbers goes evenly into 86: 1, 2, 43, 86.
It is a prime number and its factors are 43 and 1
43 = XLIII