18510040

素因数分解:

$2^3\times 5^1\times {\mathrm{359}}^1\times {\mathrm{1289}}^1$

素因数の和:1659

約数の個数: 32

約数和(自身を含む): 41796000

約数和(自身を除く): 23285960

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 359, 718, 1289, 1436, 1795, 2578, 2872, 3590, 5156, 6445, 7180, 10312, 12890, 14360, 25780, 51560, 462751, 925502, 1851004, 2313755, 3702008, 4627510, 9255020, 18510040]

約数ペア:

[(1, 18510040), (2, 9255020), (4, 4627510), (5, 3702008), (8, 2313755), (10, 1851004), (20, 925502), (40, 462751), (359, 51560), (718, 25780), (1289, 14360), (1436, 12890), (1795, 10312), (2578, 7180), (2872, 6445), (3590, 5156)]