18581589

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{167}}^1\times {\mathrm{317}}^1$

素因数の和:506

約数の個数: 32

約数和(自身を含む): 29917440

約数和(自身を除く): 11335851

約数列:

[1, 3, 9, 13, 27, 39, 117, 167, 317, 351, 501, 951, 1503, 2171, 2853, 4121, 4509, 6513, 8559, 12363, 19539, 37089, 52939, 58617, 111267, 158817, 476451, 688207, 1429353, 2064621, 6193863, 18581589]

約数ペア:

[(1, 18581589), (3, 6193863), (9, 2064621), (13, 1429353), (27, 688207), (39, 476451), (117, 158817), (167, 111267), (317, 58617), (351, 52939), (501, 37089), (951, 19539), (1503, 12363), (2171, 8559), (2853, 6513), (4121, 4509)]