21266019

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{1381}}^1$

素因数の和:1475

約数の個数: 24

約数和(自身を含む): 32338800

約数和(自身を除く): 11072781

約数列:

[1, 3, 9, 29, 59, 87, 177, 261, 531, 1381, 1711, 4143, 5133, 12429, 15399, 40049, 81479, 120147, 244437, 360441, 733311, 2362891, 7088673, 21266019]

約数ペア:

[(1, 21266019), (3, 7088673), (9, 2362891), (29, 733311), (59, 360441), (87, 244437), (177, 120147), (261, 81479), (531, 40049), (1381, 15399), (1711, 12429), (4143, 5133)]