21370311

素因数分解:

$3^4\times {\mathrm{193}}^1\times {\mathrm{1367}}^1$

素因数の和:1572

約数の個数: 20

約数和(自身を含む): 32112432

約数和(自身を除く): 10742121

約数列:

[1, 3, 9, 27, 81, 193, 579, 1367, 1737, 4101, 5211, 12303, 15633, 36909, 110727, 263831, 791493, 2374479, 7123437, 21370311]

約数ペア:

[(1, 21370311), (3, 7123437), (9, 2374479), (27, 791493), (81, 263831), (193, 110727), (579, 36909), (1367, 15633), (1737, 12303), (4101, 5211)]