18787509

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{103}}^1\times {\mathrm{1559}}^1$

素因数の和:1681

約数の個数: 24

約数和(自身を含む): 29527680

約数和(自身を除く): 10740171

約数列:

[1, 3, 9, 13, 39, 103, 117, 309, 927, 1339, 1559, 4017, 4677, 12051, 14031, 20267, 60801, 160577, 182403, 481731, 1445193, 2087501, 6262503, 18787509]

約数ペア:

[(1, 18787509), (3, 6262503), (9, 2087501), (13, 1445193), (39, 481731), (103, 182403), (117, 160577), (309, 60801), (927, 20267), (1339, 14031), (1559, 12051), (4017, 4677)]