81920727

素因数分解:

$3^4\times 7^1\times {\mathrm{144481}}^1$

素因数の和:144500

約数の個数: 20

約数和(自身を含む): 139858576

約数和(自身を除く): 57937849

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 144481, 433443, 1011367, 1300329, 3034101, 3900987, 9102303, 11702961, 27306909, 81920727]

約数ペア:

[(1, 81920727), (3, 27306909), (7, 11702961), (9, 9102303), (21, 3900987), (27, 3034101), (63, 1300329), (81, 1011367), (189, 433443), (567, 144481)]