21164481

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{4889}}^1$

素因数の和:4945

約数の個数: 24

約数和(自身を含む): 33819240

約数和(自身を除く): 12654759

約数列:

[1, 3, 9, 13, 37, 39, 111, 117, 333, 481, 1443, 4329, 4889, 14667, 44001, 63557, 180893, 190671, 542679, 572013, 1628037, 2351609, 7054827, 21164481]

約数ペア:

[(1, 21164481), (3, 7054827), (9, 2351609), (13, 1628037), (37, 572013), (39, 542679), (111, 190671), (117, 180893), (333, 63557), (481, 44001), (1443, 14667), (4329, 4889)]