18640791

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{1489}}^1$

素因数の和:1615

約数の個数: 24

約数和(自身を含む): 29287440

約数和(自身を除く): 10646649

約数列:

[1, 3, 9, 13, 39, 107, 117, 321, 963, 1391, 1489, 4173, 4467, 12519, 13401, 19357, 58071, 159323, 174213, 477969, 1433907, 2071199, 6213597, 18640791]

約数ペア:

[(1, 18640791), (3, 6213597), (9, 2071199), (13, 1433907), (39, 477969), (107, 174213), (117, 159323), (321, 58071), (963, 19357), (1391, 13401), (1489, 12519), (4173, 4467)]