18912187

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{97}}^1\times {\mathrm{173}}^1$

素因数の和:307

約数の個数: 24

約数和(自身を含む): 23327136

約数和(自身を除く): 4414949

約数列:

[1, 7, 23, 49, 97, 161, 173, 679, 1127, 1211, 2231, 3979, 4753, 8477, 15617, 16781, 27853, 109319, 117467, 194971, 385963, 822269, 2701741, 18912187]

約数ペア:

[(1, 18912187), (7, 2701741), (23, 822269), (49, 385963), (97, 194971), (161, 117467), (173, 109319), (679, 27853), (1127, 16781), (1211, 15617), (2231, 8477), (3979, 4753)]