Every number is divisible by any non-zero number.
The prime factorisation is 4168 = 2^3*521 so there are 8 factors in all.
1, 2, 3, 4, 6, 8, 9, 12, 18, 24, 36, 72, 521, 1042, 1563, 2084, 3126, 4168, 4689, 6252, 9378, 12504, 18756, 37512
2 is not divisible by 19008. 19008 is divisible by 2.
3 is not divisible by 126. 126 is divisible by 3.
2 is not divisible by 870. 870 is divisible by 2.
A number is divisible by 6 if it is divisible both by 2 and 3 1240 is even then is divisible by 2 1+2+4+0 = 7 which is not divisible by 3 then 1240 is not divisible by 3 Thus 1240 is not divisible by 6