A190217 Numbers all of whose divisors are repdigit numbers.

1, 2, 3, 4, 5, 6, 7, 8, 9, 11, 22, 33, 44, 55, 66, 77, 88, 99, 1111111111111111111, 2222222222222222222, 3333333333333333333, 4444444444444444444, 5555555555555555555, 6666666666666666666, 7777777777777777777, 8888888888888888888, 9999999999999999999

Offset: 1

Author

Jaroslav Krizek, May 06 2011

Keywords

• nonn
• base

Comments

Subset of A010785, A190220 and A190221.

Examples

			Number 99 is in sequence because all divisors of 99 (1, 3, 9, 11, 33, 99) are repdigit numbers.