18763420

素因数分解:

$2^2\times 5^1\times {\mathrm{13}}^1\times {\mathrm{72167}}^1$

素因数の和:72189

約数の個数: 24

約数和(自身を含む): 42434784

約数和(自身を除く): 23671364

約数列:

[1, 2, 4, 5, 10, 13, 20, 26, 52, 65, 130, 260, 72167, 144334, 288668, 360835, 721670, 938171, 1443340, 1876342, 3752684, 4690855, 9381710, 18763420]

約数ペア:

[(1, 18763420), (2, 9381710), (4, 4690855), (5, 3752684), (10, 1876342), (13, 1443340), (20, 938171), (26, 721670), (52, 360835), (65, 288668), (130, 144334), (260, 72167)]