31808781

素因数分解:

$3^4\times {\mathrm{71}}^1\times {\mathrm{5531}}^1$

素因数の和:5614

約数の個数: 20

約数和(自身を含む): 48194784

約数和(自身を除く): 16386003

約数列:

[1, 3, 9, 27, 71, 81, 213, 639, 1917, 5531, 5751, 16593, 49779, 149337, 392701, 448011, 1178103, 3534309, 10602927, 31808781]

約数ペア:

[(1, 31808781), (3, 10602927), (9, 3534309), (27, 1178103), (71, 448011), (81, 392701), (213, 149337), (639, 49779), (1917, 16593), (5531, 5751)]