18743967

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{109}}^1\times {\mathrm{193}}^1$

素因数の和:325

約数の個数: 40

約数和(自身を含む): 30985680

約数和(自身を除く): 12241713

約数列:

[1, 3, 9, 11, 27, 33, 81, 99, 109, 193, 297, 327, 579, 891, 981, 1199, 1737, 2123, 2943, 3597, 5211, 6369, 8829, 10791, 15633, 19107, 21037, 32373, 57321, 63111, 97119, 171963, 189333, 231407, 567999, 694221, 1703997, 2082663, 6247989, 18743967]

約数ペア:

[(1, 18743967), (3, 6247989), (9, 2082663), (11, 1703997), (27, 694221), (33, 567999), (81, 231407), (99, 189333), (109, 171963), (193, 97119), (297, 63111), (327, 57321), (579, 32373), (891, 21037), (981, 19107), (1199, 15633), (1737, 10791), (2123, 8829), (2943, 6369), (3597, 5211)]