18488197

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{37}}^1$

素因数の和:110

約数の個数: 48

約数和(自身を含む): 26131840

約数和(自身を除く): 7643643

約数列:

[1, 7, 13, 17, 19, 37, 91, 119, 133, 221, 247, 259, 289, 323, 481, 629, 703, 1547, 1729, 2023, 2261, 3367, 3757, 4199, 4403, 4921, 5491, 8177, 9139, 10693, 11951, 26299, 29393, 38437, 57239, 63973, 71383, 74851, 83657, 139009, 155363, 203167, 499681, 973063, 1087541, 1422169, 2641171, 18488197]

約数ペア:

[(1, 18488197), (7, 2641171), (13, 1422169), (17, 1087541), (19, 973063), (37, 499681), (91, 203167), (119, 155363), (133, 139009), (221, 83657), (247, 74851), (259, 71383), (289, 63973), (323, 57239), (481, 38437), (629, 29393), (703, 26299), (1547, 11951), (1729, 10693), (2023, 9139), (2261, 8177), (3367, 5491), (3757, 4921), (4199, 4403)]