20625939

素因数分解:

$3^2\times {\mathrm{43}}^1\times {\mathrm{223}}^1\times {\mathrm{239}}^1$

素因数の和:511

約数の個数: 24

約数和(自身を含む): 30750720

約数和(自身を除く): 10124781

約数列:

[1, 3, 9, 43, 129, 223, 239, 387, 669, 717, 2007, 2151, 9589, 10277, 28767, 30831, 53297, 86301, 92493, 159891, 479673, 2291771, 6875313, 20625939]

約数ペア:

[(1, 20625939), (3, 6875313), (9, 2291771), (43, 479673), (129, 159891), (223, 92493), (239, 86301), (387, 53297), (669, 30831), (717, 28767), (2007, 10277), (2151, 9589)]