20805507

素因数分解:

$3^2\times {\mathrm{37}}^1\times {\mathrm{43}}^1\times {\mathrm{1453}}^1$

素因数の和:1539

約数の個数: 24

約数和(自身を含む): 31604144

約数和(自身を除く): 10798637

約数列:

[1, 3, 9, 37, 43, 111, 129, 333, 387, 1453, 1591, 4359, 4773, 13077, 14319, 53761, 62479, 161283, 187437, 483849, 562311, 2311723, 6935169, 20805507]

約数ペア:

[(1, 20805507), (3, 6935169), (9, 2311723), (37, 562311), (43, 483849), (111, 187437), (129, 161283), (333, 62479), (387, 53761), (1453, 14319), (1591, 13077), (4359, 4773)]