21806577

素因数分解:

$3^7\times {\mathrm{13}}^2\times {\mathrm{59}}^1$

素因数の和:106

約数の個数: 48

約数和(自身を含む): 36014400

約数和(自身を除く): 14207823

約数列:

[1, 3, 9, 13, 27, 39, 59, 81, 117, 169, 177, 243, 351, 507, 531, 729, 767, 1053, 1521, 1593, 2187, 2301, 3159, 4563, 4779, 6903, 9477, 9971, 13689, 14337, 20709, 28431, 29913, 41067, 43011, 62127, 89739, 123201, 129033, 186381, 269217, 369603, 559143, 807651, 1677429, 2422953, 7268859, 21806577]

約数ペア:

[(1, 21806577), (3, 7268859), (9, 2422953), (13, 1677429), (27, 807651), (39, 559143), (59, 369603), (81, 269217), (117, 186381), (169, 129033), (177, 123201), (243, 89739), (351, 62127), (507, 43011), (531, 41067), (729, 29913), (767, 28431), (1053, 20709), (1521, 14337), (1593, 13689), (2187, 9971), (2301, 9477), (3159, 6903), (4563, 4779)]