20806588

素因数分解:

$2^2\times {\mathrm{11}}^1\times {\mathrm{487}}^1\times {\mathrm{971}}^1$

素因数の和:1473

約数の個数: 24

約数和(自身を含む): 39844224

約数和(自身を除く): 19037636

約数列:

[1, 2, 4, 11, 22, 44, 487, 971, 974, 1942, 1948, 3884, 5357, 10681, 10714, 21362, 21428, 42724, 472877, 945754, 1891508, 5201647, 10403294, 20806588]

約数ペア:

[(1, 20806588), (2, 10403294), (4, 5201647), (11, 1891508), (22, 945754), (44, 472877), (487, 42724), (971, 21428), (974, 21362), (1942, 10714), (1948, 10681), (3884, 5357)]