20157903

素因数分解:

$3^4\times {\mathrm{17}}^1\times {\mathrm{14639}}^1$

素因数の和:14668

約数の個数: 20

約数和(自身を含む): 31885920

約数和(自身を除く): 11728017

約数列:

[1, 3, 9, 17, 27, 51, 81, 153, 459, 1377, 14639, 43917, 131751, 248863, 395253, 746589, 1185759, 2239767, 6719301, 20157903]

約数ペア:

[(1, 20157903), (3, 6719301), (9, 2239767), (17, 1185759), (27, 746589), (51, 395253), (81, 248863), (153, 131751), (459, 43917), (1377, 14639)]