20640165

素因数分解:

$3^1\times 5^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{15121}}^1$

素因数の和:15149

約数の個数: 32

約数和(自身を含む): 40647936

約数和(自身を除く): 20007771

約数列:

[1, 3, 5, 7, 13, 15, 21, 35, 39, 65, 91, 105, 195, 273, 455, 1365, 15121, 45363, 75605, 105847, 196573, 226815, 317541, 529235, 589719, 982865, 1376011, 1587705, 2948595, 4128033, 6880055, 20640165]

約数ペア:

[(1, 20640165), (3, 6880055), (5, 4128033), (7, 2948595), (13, 1587705), (15, 1376011), (21, 982865), (35, 589719), (39, 529235), (65, 317541), (91, 226815), (105, 196573), (195, 105847), (273, 75605), (455, 45363), (1365, 15121)]