1271781

素因数分解:

$3^4\times 7^1\times {\mathrm{2243}}^1$

素因数の和:2262

約数の個数: 20

約数和(自身を含む): 2172192

約数和(自身を除く): 900411

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 2243, 6729, 15701, 20187, 47103, 60561, 141309, 181683, 423927, 1271781]

約数ペア:

[(1, 1271781), (3, 423927), (7, 181683), (9, 141309), (21, 60561), (27, 47103), (63, 20187), (81, 15701), (189, 6729), (567, 2243)]