18846680

素因数分解:

$2^3\times 5^1\times {\mathrm{457}}^1\times {\mathrm{1031}}^1$

素因数の和:1499

約数の個数: 32

約数和(自身を含む): 42539040

約数和(自身を除く): 23692360

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 457, 914, 1031, 1828, 2062, 2285, 3656, 4124, 4570, 5155, 8248, 9140, 10310, 18280, 20620, 41240, 471167, 942334, 1884668, 2355835, 3769336, 4711670, 9423340, 18846680]

約数ペア:

[(1, 18846680), (2, 9423340), (4, 4711670), (5, 3769336), (8, 2355835), (10, 1884668), (20, 942334), (40, 471167), (457, 41240), (914, 20620), (1031, 18280), (1828, 10310), (2062, 9140), (2285, 8248), (3656, 5155), (4124, 4570)]