19017271

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{647}}^1$

素因数の和:703

約数の個数: 32

約数和(自身を含む): 26127360

約数和(自身を除く): 7110089

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 323, 647, 1547, 1729, 2261, 4199, 4529, 8411, 10999, 12293, 29393, 58877, 76993, 86051, 142987, 159809, 208981, 1000909, 1118663, 1462867, 2716753, 19017271]

約数ペア:

[(1, 19017271), (7, 2716753), (13, 1462867), (17, 1118663), (19, 1000909), (91, 208981), (119, 159809), (133, 142987), (221, 86051), (247, 76993), (323, 58877), (647, 29393), (1547, 12293), (1729, 10999), (2261, 8411), (4199, 4529)]