81165321

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{2293}}^1$

素因数の和:2347

約数の個数: 40

約数和(自身を含む): 133235520

約数和(自身を除く): 52070199

約数列:

[1, 3, 9, 19, 23, 27, 57, 69, 81, 171, 207, 437, 513, 621, 1311, 1539, 1863, 2293, 3933, 6879, 11799, 20637, 35397, 43567, 52739, 61911, 130701, 158217, 185733, 392103, 474651, 1002041, 1176309, 1423953, 3006123, 3528927, 4271859, 9018369, 27055107, 81165321]

約数ペア:

[(1, 81165321), (3, 27055107), (9, 9018369), (19, 4271859), (23, 3528927), (27, 3006123), (57, 1423953), (69, 1176309), (81, 1002041), (171, 474651), (207, 392103), (437, 185733), (513, 158217), (621, 130701), (1311, 61911), (1539, 52739), (1863, 43567), (2293, 35397), (3933, 20637), (6879, 11799)]