18257157

素因数分解:

$3^4\times {\mathrm{19}}^1\times {\mathrm{11863}}^1$

素因数の和:11894

約数の個数: 20

約数和(自身を含む): 28710880

約数和(自身を除く): 10453723

約数列:

[1, 3, 9, 19, 27, 57, 81, 171, 513, 1539, 11863, 35589, 106767, 225397, 320301, 676191, 960903, 2028573, 6085719, 18257157]

約数ペア:

[(1, 18257157), (3, 6085719), (9, 2028573), (19, 960903), (27, 676191), (57, 320301), (81, 225397), (171, 106767), (513, 35589), (1539, 11863)]