An abundant number is any natural number (starting from 1) that is less than the sum of all its divisors excepting itself (the set of "all its divisors excepting itself" is also known as the set of its "proper divisors"). The lowest abundant number is twelve, and the first nine (all of those between one and fourty-nine, inclusive) are: 12 18 20 24 30 36 40 42 48
50
Besides 49 & 98? The numbers divisible by 49 are infinite.
All numbers are square numbers, for example, the square root of 2 squared is 2. If you mean perfect squares, here's a list: 1, 4, 9, 16, 25, 36, 49, 64, 81, 100
1 + 3 + 5 + ... + 49 = ((49 + 1)/2)2 = 625
4, 9, 25, 49 4 has 1, 2, 4 9 has 1, 3, 9 25 has 1, 5, 25 49 has 1, 7, 49
50
From that list, 49 and 57 are composite numbers.
4, 9, 25, 49
Prime squares: 4, 9, 25 and 49
No.
1
It is impossible to list all squared prime numbers as there is an infinite number of squared prime numbers starting with 4, 9, 25, 49, 121, 169, 289, 361, 529, 841,...
All multiples of 49 are divisible by it. Ex: 49, 98, 147 etc
all of them but 49, which is divisible by 7
1, 49, 7, 7. That is:1 x 49 = 497² = 49 [so 7 is twice]
the four smallest numbers are 4, 9, 25 and 49.
1,4,9,16,25,36,49