28381509

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{26953}}^1$

素因数の和:26978

約数の個数: 20

約数和(自身を含む): 45660076

約数和(自身を除く): 17278567

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 26953, 80859, 242577, 350389, 727731, 1051167, 2183193, 3153501, 9460503, 28381509]

約数ペア:

[(1, 28381509), (3, 9460503), (9, 3153501), (13, 2183193), (27, 1051167), (39, 727731), (81, 350389), (117, 242577), (351, 80859), (1053, 26953)]