21161084

素因数分解:

$2^2\times 7^1\times {\mathrm{41}}^1\times {\mathrm{18433}}^1$

素因数の和:18485

約数の個数: 24

約数和(自身を含む): 43356768

約数和(自身を除く): 22195684

約数列:

[1, 2, 4, 7, 14, 28, 41, 82, 164, 287, 574, 1148, 18433, 36866, 73732, 129031, 258062, 516124, 755753, 1511506, 3023012, 5290271, 10580542, 21161084]

約数ペア:

[(1, 21161084), (2, 10580542), (4, 5290271), (7, 3023012), (14, 1511506), (28, 755753), (41, 516124), (82, 258062), (164, 129031), (287, 73732), (574, 36866), (1148, 18433)]