21328677

素因数分解:

$3^4\times {\mathrm{59}}^1\times {\mathrm{4463}}^1$

素因数の和:4534

約数の個数: 20

約数和(自身を含む): 32408640

約数和(自身を除く): 11079963

約数列:

[1, 3, 9, 27, 59, 81, 177, 531, 1593, 4463, 4779, 13389, 40167, 120501, 263317, 361503, 789951, 2369853, 7109559, 21328677]

約数ペア:

[(1, 21328677), (3, 7109559), (9, 2369853), (27, 789951), (59, 361503), (81, 263317), (177, 120501), (531, 40167), (1593, 13389), (4463, 4779)]