18388899

素因数分解:

$3^2\times {\mathrm{83}}^1\times {\mathrm{103}}^1\times {\mathrm{239}}^1$

素因数の和:431

約数の個数: 24

約数和(自身を含む): 27256320

約数和(自身を除く): 8867421

約数列:

[1, 3, 9, 83, 103, 239, 249, 309, 717, 747, 927, 2151, 8549, 19837, 24617, 25647, 59511, 73851, 76941, 178533, 221553, 2043211, 6129633, 18388899]

約数ペア:

[(1, 18388899), (3, 6129633), (9, 2043211), (83, 221553), (103, 178533), (239, 76941), (249, 73851), (309, 59511), (717, 25647), (747, 24617), (927, 19837), (2151, 8549)]