81282513

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2551}}^1$

素因数の和:2629

約数の個数: 32

約数和(自身を含む): 125762560

約数和(自身を除く): 44480047

約数列:

[1, 3, 13, 19, 39, 43, 57, 129, 247, 559, 741, 817, 1677, 2451, 2551, 7653, 10621, 31863, 33163, 48469, 99489, 109693, 145407, 329079, 630097, 1426009, 1890291, 2084167, 4278027, 6252501, 27094171, 81282513]

約数ペア:

[(1, 81282513), (3, 27094171), (13, 6252501), (19, 4278027), (39, 2084167), (43, 1890291), (57, 1426009), (129, 630097), (247, 329079), (559, 145407), (741, 109693), (817, 99489), (1677, 48469), (2451, 33163), (2551, 31863), (7653, 10621)]