18840549

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{9859}}^1$

素因数の和:9889

約数の個数: 24

約数和(自身を含む): 31473120

約数和(自身を除く): 12632571

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 9859, 29577, 69013, 128167, 207039, 384501, 483091, 897169, 1449273, 2691507, 6280183, 18840549]

約数ペア:

[(1, 18840549), (3, 6280183), (7, 2691507), (13, 1449273), (21, 897169), (39, 483091), (49, 384501), (91, 207039), (147, 128167), (273, 69013), (637, 29577), (1911, 9859)]