18878391

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{10333}}^1$

素因数の和:10375

約数の個数: 24

約数和(自身を含む): 32242080

約数和(自身を除く): 13363689

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 10333, 30999, 72331, 92997, 216993, 299657, 650979, 898971, 2097599, 2696913, 6292797, 18878391]

約数ペア:

[(1, 18878391), (3, 6292797), (7, 2696913), (9, 2097599), (21, 898971), (29, 650979), (63, 299657), (87, 216993), (203, 92997), (261, 72331), (609, 30999), (1827, 10333)]