12640719

素因数分解:

$3^1\times 7^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{2437}}^1$

素因数の和:2479

約数の個数: 32

約数和(自身を含む): 21844480

約数和(自身を除く): 9203761

約数列:

[1, 3, 7, 13, 19, 21, 39, 57, 91, 133, 247, 273, 399, 741, 1729, 2437, 5187, 7311, 17059, 31681, 46303, 51177, 95043, 138909, 221767, 324121, 601939, 665301, 972363, 1805817, 4213573, 12640719]

約数ペア:

[(1, 12640719), (3, 4213573), (7, 1805817), (13, 972363), (19, 665301), (21, 601939), (39, 324121), (57, 221767), (91, 138909), (133, 95043), (247, 51177), (273, 46303), (399, 31681), (741, 17059), (1729, 7311), (2437, 5187)]