All whole numbers yes
One is a factor of all nonzero numbers.
one
One.
One is.
One.
Yes. One is a factor of all numbers.
All whole numbers except for -1, 0 and 1 have at least one prime factor.
1 is a factor of all positive numbers.
Yes, all number with have the factor 1 and itself.
One is.
One and negative one.
No, all even numbers share one factor. The one factor being 2.