30720963

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{2617}}^1$

素因数の和:2683

約数の個数: 32

約数和(自身を含む): 51606016

約数和(自身を除く): 20885053

約数列:

[1, 3, 7, 13, 21, 39, 43, 91, 129, 273, 301, 559, 903, 1677, 2617, 3913, 7851, 11739, 18319, 34021, 54957, 102063, 112531, 238147, 337593, 714441, 787717, 1462903, 2363151, 4388709, 10240321, 30720963]

約数ペア:

[(1, 30720963), (3, 10240321), (7, 4388709), (13, 2363151), (21, 1462903), (39, 787717), (43, 714441), (91, 337593), (129, 238147), (273, 112531), (301, 102063), (559, 54957), (903, 34021), (1677, 18319), (2617, 11739), (3913, 7851)]