18420291

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{11969}}^1$

素因数の和:12000

約数の個数: 20

約数和(自身を含む): 28967400

約数和(自身を除く): 10547109

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 11969, 35907, 107721, 227411, 323163, 682233, 969489, 2046699, 6140097, 18420291]

約数ペア:

[(1, 18420291), (3, 6140097), (9, 2046699), (19, 969489), (27, 682233), (57, 323163), (81, 227411), (171, 107721), (513, 35907), (1539, 11969)]