31871151

素因数分解:

$3^7\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{59}}^1$

素因数の和:112

約数の個数: 64

約数和(自身を含む): 55104000

約数和(自身を除く): 23232849

約数列:

[1, 3, 9, 13, 19, 27, 39, 57, 59, 81, 117, 171, 177, 243, 247, 351, 513, 531, 729, 741, 767, 1053, 1121, 1539, 1593, 2187, 2223, 2301, 3159, 3363, 4617, 4779, 6669, 6903, 9477, 10089, 13851, 14337, 14573, 20007, 20709, 28431, 30267, 41553, 43011, 43719, 60021, 62127, 90801, 129033, 131157, 180063, 186381, 272403, 393471, 540189, 559143, 817209, 1180413, 1677429, 2451627, 3541239, 10623717, 31871151]

約数ペア:

[(1, 31871151), (3, 10623717), (9, 3541239), (13, 2451627), (19, 1677429), (27, 1180413), (39, 817209), (57, 559143), (59, 540189), (81, 393471), (117, 272403), (171, 186381), (177, 180063), (243, 131157), (247, 129033), (351, 90801), (513, 62127), (531, 60021), (729, 43719), (741, 43011), (767, 41553), (1053, 30267), (1121, 28431), (1539, 20709), (1593, 20007), (2187, 14573), (2223, 14337), (2301, 13851), (3159, 10089), (3363, 9477), (4617, 6903), (4779, 6669)]