1, 2, 4, 5, 7, 8
I think you mean, the largest four digit number that has exactly three divisors. 2X3X1663=9,978
27000
23 divide 3974
0.029
The single-digit divisors of 7,000 are 1, 2, 4, 5, 7, 8.
The single digit divisors of 420 are: 1,2,3,4,5,6, and 7
12458
The single-digit divisors of 3,456 are: 1, 2, 3, 4, 6, 8 and 9.
1, 2, 3, 5, 6, 7 and 9
1, 2, 4, 5, 7, 8
1 2 3 5 6 7 9.
1 [trivially], 2, 3, 4, 5, 6, and 7.
The single-digit divisors of 1,680 are: 1, 2, 3, 4, 5, 6, 7, 8. The two-digit divisors are: 10, 12, 14, 15, 16, 20, 21, 24, 28, 30, 35, 40, 42, 48, 56, 60, 70, 80, 84.
1 2 3 4 5 6 7 8.
The single digit divisors (factors) of 160 are, 1, 2, 4, 5, and 8. As 1x 160 = 160, 2 x 80 = 160, 4 x 40 = 160, 5 x 32 = 160 and 8 x 20 = 160
27000