20851173

素因数分解:

$3^2\times 7^1\times {\mathrm{43}}^2\times {\mathrm{179}}^1$

素因数の和:278

約数の個数: 36

約数和(自身を含む): 35436960

約数和(自身を除く): 14585787

約数列:

[1, 3, 7, 9, 21, 43, 63, 129, 179, 301, 387, 537, 903, 1253, 1611, 1849, 2709, 3759, 5547, 7697, 11277, 12943, 16641, 23091, 38829, 53879, 69273, 116487, 161637, 330971, 484911, 992913, 2316797, 2978739, 6950391, 20851173]

約数ペア:

[(1, 20851173), (3, 6950391), (7, 2978739), (9, 2316797), (21, 992913), (43, 484911), (63, 330971), (129, 161637), (179, 116487), (301, 69273), (387, 53879), (537, 38829), (903, 23091), (1253, 16641), (1611, 12943), (1849, 11277), (2709, 7697), (3759, 5547)]