20157579

素因数分解:

$3^7\times {\mathrm{13}}^1\times {\mathrm{709}}^1$

素因数の和:743

約数の個数: 32

約数和(自身を含む): 32603200

約数和(自身を除く): 12445621

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 243, 351, 709, 729, 1053, 2127, 2187, 3159, 6381, 9217, 9477, 19143, 27651, 28431, 57429, 82953, 172287, 248859, 516861, 746577, 1550583, 2239731, 6719193, 20157579]

約数ペア:

[(1, 20157579), (3, 6719193), (9, 2239731), (13, 1550583), (27, 746577), (39, 516861), (81, 248859), (117, 172287), (243, 82953), (351, 57429), (709, 28431), (729, 27651), (1053, 19143), (2127, 9477), (2187, 9217), (3159, 6381)]