18956779491

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{43}}^1\times {\mathrm{239}}^1\times {\mathrm{47297}}^1$

素因数の和:47595

約数の個数: 32

約数和(自身を含む): 27970145280

約数和(自身を除く): 9013365789

約数列:

[1, 3, 13, 39, 43, 129, 239, 559, 717, 1677, 3107, 9321, 10277, 30831, 47297, 133601, 141891, 400803, 614861, 1844583, 2033771, 6101313, 11303983, 26439023, 33911949, 79317069, 146951779, 440855337, 486071269, 1458213807, 6318926497, 18956779491]

約数ペア:

[(1, 18956779491), (3, 6318926497), (13, 1458213807), (39, 486071269), (43, 440855337), (129, 146951779), (239, 79317069), (559, 33911949), (717, 26439023), (1677, 11303983), (3107, 6101313), (9321, 2033771), (10277, 1844583), (30831, 614861), (47297, 400803), (133601, 141891)]