21508208643

素因数分解:

$3^1\times {\mathrm{29}}^1\times {\mathrm{263}}^1\times {\mathrm{940003}}^1$

素因数の和:940298

約数の個数: 16

約数和(自身を含む): 29779326720

約数和(自身を除く): 8271118077

約数列:

[1, 3, 29, 87, 263, 789, 7627, 22881, 940003, 2820009, 27260087, 81780261, 247220789, 741662367, 7169402881, 21508208643]

約数ペア:

[(1, 21508208643), (3, 7169402881), (29, 741662367), (87, 247220789), (263, 81780261), (789, 27260087), (7627, 2820009), (22881, 940003)]