81645759

素因数分解:

$3^3\times {\mathrm{13}}^2\times {\mathrm{29}}^1\times {\mathrm{617}}^1$

素因数の和:681

約数の個数: 48

約数和(自身を含む): 135712800

約数和(自身を除く): 54067041

約数列:

[1, 3, 9, 13, 27, 29, 39, 87, 117, 169, 261, 351, 377, 507, 617, 783, 1131, 1521, 1851, 3393, 4563, 4901, 5553, 8021, 10179, 14703, 16659, 17893, 24063, 44109, 53679, 72189, 104273, 132327, 161037, 216567, 232609, 312819, 483111, 697827, 938457, 2093481, 2815371, 3023917, 6280443, 9071751, 27215253, 81645759]

約数ペア:

[(1, 81645759), (3, 27215253), (9, 9071751), (13, 6280443), (27, 3023917), (29, 2815371), (39, 2093481), (87, 938457), (117, 697827), (169, 483111), (261, 312819), (351, 232609), (377, 216567), (507, 161037), (617, 132327), (783, 104273), (1131, 72189), (1521, 53679), (1851, 44109), (3393, 24063), (4563, 17893), (4901, 16659), (5553, 14703), (8021, 10179)]