18704889

素因数分解:

$3^2\times 7^1\times {\mathrm{367}}^1\times {\mathrm{809}}^1$

素因数の和:1189

約数の個数: 24

約数和(自身を含む): 31000320

約数和(自身を除く): 12295431

約数列:

[1, 3, 7, 9, 21, 63, 367, 809, 1101, 2427, 2569, 3303, 5663, 7281, 7707, 16989, 23121, 50967, 296903, 890709, 2078321, 2672127, 6234963, 18704889]

約数ペア:

[(1, 18704889), (3, 6234963), (7, 2672127), (9, 2078321), (21, 890709), (63, 296903), (367, 50967), (809, 23121), (1101, 16989), (2427, 7707), (2569, 7281), (3303, 5663)]