20852721

素因数分解:

$3^4\times {\mathrm{43}}^1\times {\mathrm{5987}}^1$

素因数の和:6042

約数の個数: 20

約数和(自身を含む): 31880112

約数和(自身を除く): 11027391

約数列:

[1, 3, 9, 27, 43, 81, 129, 387, 1161, 3483, 5987, 17961, 53883, 161649, 257441, 484947, 772323, 2316969, 6950907, 20852721]

約数ペア:

[(1, 20852721), (3, 6950907), (9, 2316969), (27, 772323), (43, 484947), (81, 257441), (129, 161649), (387, 53883), (1161, 17961), (3483, 5987)]