21118401

素因数分解:

$3^6\times {\mathrm{59}}^1\times {\mathrm{491}}^1$

素因数の和:568

約数の個数: 28

約数和(自身を含む): 32265360

約数和(自身を除く): 11146959

約数列:

[1, 3, 9, 27, 59, 81, 177, 243, 491, 531, 729, 1473, 1593, 4419, 4779, 13257, 14337, 28969, 39771, 43011, 86907, 119313, 260721, 357939, 782163, 2346489, 7039467, 21118401]

約数ペア:

[(1, 21118401), (3, 7039467), (9, 2346489), (27, 782163), (59, 357939), (81, 260721), (177, 119313), (243, 86907), (491, 43011), (531, 39771), (729, 28969), (1473, 14337), (1593, 13257), (4419, 4779)]