20431593

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{101}}^1$

素因数の和:159

約数の個数: 72

約数和(自身を含む): 38825280

約数和(自身を除く): 18393687

約数列:

[1, 3, 7, 9, 13, 19, 21, 39, 57, 63, 91, 101, 117, 133, 169, 171, 247, 273, 303, 399, 507, 707, 741, 819, 909, 1183, 1197, 1313, 1521, 1729, 1919, 2121, 2223, 3211, 3549, 3939, 5187, 5757, 6363, 9191, 9633, 10647, 11817, 13433, 15561, 17069, 17271, 22477, 24947, 27573, 28899, 40299, 51207, 67431, 74841, 82719, 119483, 120897, 153621, 174629, 202293, 224523, 324311, 358449, 523887, 972933, 1075347, 1571661, 2270177, 2918799, 6810531, 20431593]

約数ペア:

[(1, 20431593), (3, 6810531), (7, 2918799), (9, 2270177), (13, 1571661), (19, 1075347), (21, 972933), (39, 523887), (57, 358449), (63, 324311), (91, 224523), (101, 202293), (117, 174629), (133, 153621), (169, 120897), (171, 119483), (247, 82719), (273, 74841), (303, 67431), (399, 51207), (507, 40299), (707, 28899), (741, 27573), (819, 24947), (909, 22477), (1183, 17271), (1197, 17069), (1313, 15561), (1521, 13433), (1729, 11817), (1919, 10647), (2121, 9633), (2223, 9191), (3211, 6363), (3549, 5757), (3939, 5187)]