20287617

素因数分解:

$3^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{4759}}^1$

素因数の和:4805

約数の個数: 24

約数和(自身を含む): 32558400

約数和(自身を除く): 12270783

約数列:

[1, 3, 7, 21, 29, 49, 87, 147, 203, 609, 1421, 4263, 4759, 14277, 33313, 99939, 138011, 233191, 414033, 699573, 966077, 2898231, 6762539, 20287617]

約数ペア:

[(1, 20287617), (3, 6762539), (7, 2898231), (21, 966077), (29, 699573), (49, 414033), (87, 233191), (147, 138011), (203, 99939), (609, 33313), (1421, 14277), (4263, 4759)]