I divisori di 9891 sono 12, elencati qui di seguito: 1; 3; 7; 9; 21; 63; 157; 471; 1099; 1413; 3297; 9891
9872, 9873, 9874, 9875, 9876, 9877, 9878, 9879, 9880, 9881, 9882, 9883, 9884, 9885, 9886, 9887, 9888, 9889, 9890, 9892, 9893, 9894, 9895, 9896, 9897, 9898, 9899, 9900, 9901, 9902, 9903, 9904, 9905, 9906, 9907, 9908, 9909, 9910