212865723

素因数分解:

$3^2\times 7^1\times {\mathrm{199}}^1\times {\mathrm{16979}}^1$

素因数の和:17191

約数の個数: 24

約数和(自身を含む): 353184000

約数和(自身を除く): 140318277

約数列:

[1, 3, 7, 9, 21, 63, 199, 597, 1393, 1791, 4179, 12537, 16979, 50937, 118853, 152811, 356559, 1069677, 3378821, 10136463, 23651747, 30409389, 70955241, 212865723]

約数ペア:

[(1, 212865723), (3, 70955241), (7, 30409389), (9, 23651747), (21, 10136463), (63, 3378821), (199, 1069677), (597, 356559), (1393, 152811), (1791, 118853), (4179, 50937), (12537, 16979)]