21573999

素因数分解:

$3^3\times {\mathrm{29}}^1\times {\mathrm{59}}^1\times {\mathrm{467}}^1$

素因数の和:564

約数の個数: 32

約数和(自身を含む): 33696000

約数和(自身を除く): 12122001

約数列:

[1, 3, 9, 27, 29, 59, 87, 177, 261, 467, 531, 783, 1401, 1593, 1711, 4203, 5133, 12609, 13543, 15399, 27553, 40629, 46197, 82659, 121887, 247977, 365661, 743931, 799037, 2397111, 7191333, 21573999]

約数ペア:

[(1, 21573999), (3, 7191333), (9, 2397111), (27, 799037), (29, 743931), (59, 365661), (87, 247977), (177, 121887), (261, 82659), (467, 46197), (531, 40629), (783, 27553), (1401, 15399), (1593, 13543), (1711, 12609), (4203, 5133)]