78881607

素因数分解:

$3^4\times 7^1\times {\mathrm{139121}}^1$

素因数の和:139140

約数の個数: 20

約数和(自身を含む): 134670096

約数和(自身を除く): 55788489

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 139121, 417363, 973847, 1252089, 2921541, 3756267, 8764623, 11268801, 26293869, 78881607]

約数ペア:

[(1, 78881607), (3, 26293869), (7, 11268801), (9, 8764623), (21, 3756267), (27, 2921541), (63, 1252089), (81, 973847), (189, 417363), (567, 139121)]