20181427209

素因数分解:

$3^3\times {\mathrm{17}}^1\times {\mathrm{61}}^1\times {\mathrm{720791}}^1$

素因数の和:720878

約数の個数: 32

約数和(自身を含む): 32176154880

約数和(自身を除く): 11994727671

約数列:

[1, 3, 9, 17, 27, 51, 61, 153, 183, 459, 549, 1037, 1647, 3111, 9333, 27999, 720791, 2162373, 6487119, 12253447, 19461357, 36760341, 43968251, 110281023, 131904753, 330843069, 395714259, 747460267, 1187142777, 2242380801, 6727142403, 20181427209]

約数ペア:

[(1, 20181427209), (3, 6727142403), (9, 2242380801), (17, 1187142777), (27, 747460267), (51, 395714259), (61, 330843069), (153, 131904753), (183, 110281023), (459, 43968251), (549, 36760341), (1037, 19461357), (1647, 12253447), (3111, 6487119), (9333, 2162373), (27999, 720791)]