20397621

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{449}}^1\times {\mathrm{797}}^1$

素因数の和:1268

約数の個数: 16

約数和(自身を含む): 28728000

約数和(自身を除く): 8330379

約数列:

[1, 3, 19, 57, 449, 797, 1347, 2391, 8531, 15143, 25593, 45429, 357853, 1073559, 6799207, 20397621]

約数ペア:

[(1, 20397621), (3, 6799207), (19, 1073559), (57, 357853), (449, 45429), (797, 25593), (1347, 15143), (2391, 8531)]