18914920

素因数分解:

$2^3\times 5^1\times {\mathrm{103}}^1\times {\mathrm{4591}}^1$

素因数の和:4705

約数の個数: 32

約数和(自身を含む): 42981120

約数和(自身を除く): 24066200

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 103, 206, 412, 515, 824, 1030, 2060, 4120, 4591, 9182, 18364, 22955, 36728, 45910, 91820, 183640, 472873, 945746, 1891492, 2364365, 3782984, 4728730, 9457460, 18914920]

約数ペア:

[(1, 18914920), (2, 9457460), (4, 4728730), (5, 3782984), (8, 2364365), (10, 1891492), (20, 945746), (40, 472873), (103, 183640), (206, 91820), (412, 45910), (515, 36728), (824, 22955), (1030, 18364), (2060, 9182), (4120, 4591)]