81903549

素因数分解:

$3^1\times 7^2\times {\mathrm{13}}^1\times {\mathrm{42859}}^1$

素因数の和:42889

約数の個数: 24

約数和(自身を含む): 136809120

約数和(自身を除く): 54905571

約数列:

[1, 3, 7, 13, 21, 39, 49, 91, 147, 273, 637, 1911, 42859, 128577, 300013, 557167, 900039, 1671501, 2100091, 3900169, 6300273, 11700507, 27301183, 81903549]

約数ペア:

[(1, 81903549), (3, 27301183), (7, 11700507), (13, 6300273), (21, 3900169), (39, 2100091), (49, 1671501), (91, 900039), (147, 557167), (273, 300013), (637, 128577), (1911, 42859)]