No, the first abundant number is 12.
101
12,18,20,24
There are an infinite number of numbers between any two numbers.
The LCF of any set of numbers is 1.
Any set of coprime numbers. For example, {8, 9, 10}.
The lowest common FACTOR of any set of numbers is 1. Perhaps you meant the Lowest Common MULTIPLE, which for 6, 10, 15 is 30. Or you meant the HIGHEST Common Factor, which for 6, 10, 15 is 1.
Any one of the infinite set of numbers of the form 2520*k where k is an integer.
The two numbers 10 and -1: 10 × -1 = -10 10 + -1 = 10 - 1 = 9
GCF(1, 5, 10) = 1. The GCF of any set of numbers containing 1 must be 1.
In contrast, no prime numbers are divisible by 10. Any prime number is divisible only by itself and 1.
Any number and its reciprocal. Examples: 1/2 and 2 1/3 and 3 1/10 and 10 1 million and 0.000001
All the powers and exponents of 1 are 1.The powers and exponents of any of the other numbers up to 10 are equivalent to the all the positive numbers - rational and irrational.