21861501

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{137}}^1\times {\mathrm{1237}}^1$

素因数の和:1420

約数の個数: 16

約数和(自身を含む): 30068544

約数和(自身を除く): 8207043

約数列:

[1, 3, 43, 129, 137, 411, 1237, 3711, 5891, 17673, 53191, 159573, 169469, 508407, 7287167, 21861501]

約数ペア:

[(1, 21861501), (3, 7287167), (43, 508407), (129, 169469), (137, 159573), (411, 53191), (1237, 17673), (3711, 5891)]