18438381

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{131}}^1\times {\mathrm{401}}^1$

素因数の和:554

約数の個数: 32

約数和(自身を含む): 29715840

約数和(自身を除く): 11277459

約数列:

[1, 3, 9, 13, 27, 39, 117, 131, 351, 393, 401, 1179, 1203, 1703, 3537, 3609, 5109, 5213, 10827, 15327, 15639, 45981, 46917, 52531, 140751, 157593, 472779, 682903, 1418337, 2048709, 6146127, 18438381]

約数ペア:

[(1, 18438381), (3, 6146127), (9, 2048709), (13, 1418337), (27, 682903), (39, 472779), (117, 157593), (131, 140751), (351, 52531), (393, 46917), (401, 45981), (1179, 15639), (1203, 15327), (1703, 10827), (3537, 5213), (3609, 5109)]