81457389

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{19}}^1\times {\mathrm{36643}}^1$

素因数の和:36681

約数の個数: 24

約数和(自身を含む): 133384160

約数和(自身を除く): 51926771

約数列:

[1, 3, 9, 13, 19, 39, 57, 117, 171, 247, 741, 2223, 36643, 109929, 329787, 476359, 696217, 1429077, 2088651, 4287231, 6265953, 9050821, 27152463, 81457389]

約数ペア:

[(1, 81457389), (3, 27152463), (9, 9050821), (13, 6265953), (19, 4287231), (39, 2088651), (57, 1429077), (117, 696217), (171, 476359), (247, 329787), (741, 109929), (2223, 36643)]