18841329

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{617}}^1$

素因数の和:671

約数の個数: 40

約数和(自身を含む): 31406760

約数和(自身を除く): 12565431

約数列:

[1, 3, 9, 13, 27, 29, 39, 81, 87, 117, 261, 351, 377, 617, 783, 1053, 1131, 1851, 2349, 3393, 5553, 8021, 10179, 16659, 17893, 24063, 30537, 49977, 53679, 72189, 161037, 216567, 232609, 483111, 649701, 697827, 1449333, 2093481, 6280443, 18841329]

約数ペア:

[(1, 18841329), (3, 6280443), (9, 2093481), (13, 1449333), (27, 697827), (29, 649701), (39, 483111), (81, 232609), (87, 216567), (117, 161037), (261, 72189), (351, 53679), (377, 49977), (617, 30537), (783, 24063), (1053, 17893), (1131, 16659), (1851, 10179), (2349, 8021), (3393, 5553)]