281609991

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{739}}^1\times {\mathrm{3257}}^1$

素因数の和:4015

約数の個数: 24

約数和(自身を含む): 438787440

約数和(自身を除く): 157177449

約数列:

[1, 3, 9, 13, 39, 117, 739, 2217, 3257, 6651, 9607, 9771, 28821, 29313, 42341, 86463, 127023, 381069, 2406923, 7220769, 21662307, 31289999, 93869997, 281609991]

約数ペア:

[(1, 281609991), (3, 93869997), (9, 31289999), (13, 21662307), (39, 7220769), (117, 2406923), (739, 381069), (2217, 127023), (3257, 86463), (6651, 42341), (9607, 29313), (9771, 28821)]