39988557

素因数分解:

$3^2\times 7^2\times {\mathrm{90677}}^1$

素因数の和:90697

約数の個数: 18

約数和(自身を含む): 67192398

約数和(自身を除く): 27203841

約数列:

[1, 3, 7, 9, 21, 49, 63, 147, 441, 90677, 272031, 634739, 816093, 1904217, 4443173, 5712651, 13329519, 39988557]

約数ペア:

[(1, 39988557), (3, 13329519), (7, 5712651), (9, 4443173), (21, 1904217), (49, 816093), (63, 634739), (147, 272031), (441, 90677)]