128418017

素因数分解:

$7^1\times {\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{257}}^1$

素因数の和:330

約数の個数: 48

約数和(自身を含む): 177421440

約数和(自身を除く): 49003423

約数列:

[1, 7, 13, 17, 19, 91, 119, 133, 221, 247, 257, 289, 323, 1547, 1729, 1799, 2023, 2261, 3341, 3757, 4199, 4369, 4883, 5491, 23387, 26299, 29393, 30583, 34181, 38437, 56797, 63479, 71383, 74273, 83011, 397579, 444353, 499681, 519911, 581077, 965549, 1079143, 1411187, 6758843, 7554001, 9878309, 18345431, 128418017]

約数ペア:

[(1, 128418017), (7, 18345431), (13, 9878309), (17, 7554001), (19, 6758843), (91, 1411187), (119, 1079143), (133, 965549), (221, 581077), (247, 519911), (257, 499681), (289, 444353), (323, 397579), (1547, 83011), (1729, 74273), (1799, 71383), (2023, 63479), (2261, 56797), (3341, 38437), (3757, 34181), (4199, 30583), (4369, 29393), (4883, 26299), (5491, 23387)]