28290639

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{73}}^1\times {\mathrm{523}}^1$

素因数の和:631

約数の個数: 32

約数和(自身を含む): 43429120

約数和(自身を除く): 15138481

約数列:

[1, 3, 13, 19, 39, 57, 73, 219, 247, 523, 741, 949, 1387, 1569, 2847, 4161, 6799, 9937, 18031, 20397, 29811, 38179, 54093, 114537, 129181, 387543, 496327, 725401, 1488981, 2176203, 9430213, 28290639]

約数ペア:

[(1, 28290639), (3, 9430213), (13, 2176203), (19, 1488981), (39, 725401), (57, 496327), (73, 387543), (219, 129181), (247, 114537), (523, 54093), (741, 38179), (949, 29811), (1387, 20397), (1569, 18031), (2847, 9937), (4161, 6799)]