What is divisible by 3240?

Answer 1

3,6,9,10

Answer 2

All multiples of 3240 are divisible by 3240. The first 100 are:

3240, 6480, 9720, 12960, 16200, 19440, 22680, 25920, 29160, 32400, 35640, 38880, 42120, 45360, 48600, 51840, 55080, 58320, 61560, 64800, 68040, 71280, 74520, 77760, 81000, 84240, 87480, 90720, 93960, 97200, 100440, 103680, 106920, 110160, 113400, 116640, 119880, 123120, 126360, 129600, 132840, 136080, 139320, 142560, 145800, 149040, 152280, 155520, 158760, 162000, 165240, 168480, 171720, 174960, 178200, 181440, 184680, 187920, 191160, 194400, 197640, 200880, 204120, 207360, 210600, 213840, 217080, 220320, 223560, 226800, 230040, 233280, 236520, 239760, 243000, 246240, 249480, 252720, 255960, 259200, 262440, 265680, 268920, 272160, 275400, 278640, 281880, 285120, 288360, 291600, 294840, 298080, 301320, 304560, 307800, 311040, 314280, 317520, 320760, 324000

If you meant "what is 3240 divisible by?", that is "What divides into 3240 (exactly)?" which can also be expressed as "What are the factors of 3240?" then:

The (40) factors of 3240 are: 1, 2, 3, 4, 5, 6, 8, 9, 10, 12, 15, 18, 20, 24, 27, 30, 36, 40, 45, 54, 60, 72, 81, 90, 108, 120, 135, 162, 180, 216, 270, 324, 360, 405, 540, 648, 810, 1080, 1620, 3240