81389529

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{2089}}^1$

素因数の和:2151

約数の個数: 40

約数和(自身を含む): 134537480

約数和(自身を除く): 53147951

約数列:

[1, 3, 9, 13, 27, 37, 39, 81, 111, 117, 333, 351, 481, 999, 1053, 1443, 2089, 2997, 4329, 6267, 12987, 18801, 27157, 38961, 56403, 77293, 81471, 169209, 231879, 244413, 695637, 733239, 1004809, 2086911, 2199717, 3014427, 6260733, 9043281, 27129843, 81389529]

約数ペア:

[(1, 81389529), (3, 27129843), (9, 9043281), (13, 6260733), (27, 3014427), (37, 2199717), (39, 2086911), (81, 1004809), (111, 733239), (117, 695637), (333, 244413), (351, 231879), (481, 169209), (999, 81471), (1053, 77293), (1443, 56403), (2089, 38961), (2997, 27157), (4329, 18801), (6267, 12987)]