20887185

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{277}}^1\times {\mathrm{457}}^1$

素因数の和:753

約数の個数: 32

約数和(自身を含む): 36669312

約数和(自身を除く): 15782127

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 277, 457, 831, 1371, 1385, 2285, 3047, 4155, 5027, 6855, 9141, 15081, 15235, 25135, 45705, 75405, 126589, 379767, 632945, 1392479, 1898835, 4177437, 6962395, 20887185]

約数ペア:

[(1, 20887185), (3, 6962395), (5, 4177437), (11, 1898835), (15, 1392479), (33, 632945), (55, 379767), (165, 126589), (277, 75405), (457, 45705), (831, 25135), (1371, 15235), (1385, 15081), (2285, 9141), (3047, 6855), (4155, 5027)]