20704957

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{47}}^2\times {\mathrm{103}}^1$

素因数の和:217

約数の個数: 24

約数和(自身を含む): 26289536

約数和(自身を除く): 5584579

約数列:

[1, 7, 13, 47, 91, 103, 329, 611, 721, 1339, 2209, 4277, 4841, 9373, 15463, 28717, 33887, 62933, 201019, 227527, 440531, 1592689, 2957851, 20704957]

約数ペア:

[(1, 20704957), (7, 2957851), (13, 1592689), (47, 440531), (91, 227527), (103, 201019), (329, 62933), (611, 33887), (721, 28717), (1339, 15463), (2209, 9373), (4277, 4841)]