18770787

素因数分解:

$3^2\times 7^1\times {\mathrm{67}}^1\times {\mathrm{4447}}^1$

素因数の和:4527

約数の個数: 24

約数和(自身を含む): 31456256

約数和(自身を除く): 12685469

約数列:

[1, 3, 7, 9, 21, 63, 67, 201, 469, 603, 1407, 4221, 4447, 13341, 31129, 40023, 93387, 280161, 297949, 893847, 2085643, 2681541, 6256929, 18770787]

約数ペア:

[(1, 18770787), (3, 6256929), (7, 2681541), (9, 2085643), (21, 893847), (63, 297949), (67, 280161), (201, 93387), (469, 40023), (603, 31129), (1407, 13341), (4221, 4447)]