48
The only number that's neither more nor less than 50 is 50.
The smallest odd number greater than 50 is 51.It doesn't matter what it's less than.
2n - 20 = 50
It is: 47
48 has 10 factors, the most factors of any number under 50.
48
42
1 has one factor.
The numbers for which the sum of its proper factors is 1 less than the number is the powers of 2; less than 50 these are: 2, 4, 8, 16 & 32.
39
64.
36 The factors of 36 are : 36,18,12,9,6,4,3,2 and 1.
30
It is 30.
I think it's 51.
There is no such number. For if you considered 49.99 to be such a number, then 49.995 is a greater number and it is less than 50. And then 49.9955 is even greater and still less than 50. This process can go on without end.