81607827

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{103}}^1\times {\mathrm{1301}}^1$

素因数の和:1443

約数の個数: 32

約数和(自身を含む): 129991680

約数和(自身を除く): 48383853

約数列:

[1, 3, 7, 21, 29, 87, 103, 203, 309, 609, 721, 1301, 2163, 2987, 3903, 8961, 9107, 20909, 27321, 37729, 62727, 113187, 134003, 264103, 402009, 792309, 938021, 2814063, 3886087, 11658261, 27202609, 81607827]

約数ペア:

[(1, 81607827), (3, 27202609), (7, 11658261), (21, 3886087), (29, 2814063), (87, 938021), (103, 792309), (203, 402009), (309, 264103), (609, 134003), (721, 113187), (1301, 62727), (2163, 37729), (2987, 27321), (3903, 20909), (8961, 9107)]