21518757

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{101}}^1\times {\mathrm{607}}^1$

素因数の和:730

約数の個数: 32

約数和(自身を含む): 34728960

約数和(自身を除く): 13210203

約数列:

[1, 3, 9, 13, 27, 39, 101, 117, 303, 351, 607, 909, 1313, 1821, 2727, 3939, 5463, 7891, 11817, 16389, 23673, 35451, 61307, 71019, 183921, 213057, 551763, 796991, 1655289, 2390973, 7172919, 21518757]

約数ペア:

[(1, 21518757), (3, 7172919), (9, 2390973), (13, 1655289), (27, 796991), (39, 551763), (101, 213057), (117, 183921), (303, 71019), (351, 61307), (607, 35451), (909, 23673), (1313, 16389), (1821, 11817), (2727, 7891), (3939, 5463)]