20991744767

素因数分解:

$7^1\times {\mathrm{31}}^2\times {\mathrm{71}}^1\times {\mathrm{43951}}^1$

素因数の和:44091

約数の個数: 24

約数和(自身を含む): 25139137536

約数和(自身を除く): 4147392769

約数列:

[1, 7, 31, 71, 217, 497, 961, 2201, 6727, 15407, 43951, 68231, 307657, 477617, 1362481, 3120521, 9537367, 21843647, 42236911, 96736151, 295658377, 677153057, 2998820681, 20991744767]

約数ペア:

[(1, 20991744767), (7, 2998820681), (31, 677153057), (71, 295658377), (217, 96736151), (497, 42236911), (961, 21843647), (2201, 9537367), (6727, 3120521), (15407, 1362481), (43951, 477617), (68231, 307657)]