18885800

素因数分解:

$2^3\times 5^2\times {\mathrm{89}}^1\times {\mathrm{1061}}^1$

素因数の和:1166

約数の個数: 48

約数和(自身を含む): 44444700

約数和(自身を除く): 25558900

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 50, 89, 100, 178, 200, 356, 445, 712, 890, 1061, 1780, 2122, 2225, 3560, 4244, 4450, 5305, 8488, 8900, 10610, 17800, 21220, 26525, 42440, 53050, 94429, 106100, 188858, 212200, 377716, 472145, 755432, 944290, 1888580, 2360725, 3777160, 4721450, 9442900, 18885800]

約数ペア:

[(1, 18885800), (2, 9442900), (4, 4721450), (5, 3777160), (8, 2360725), (10, 1888580), (20, 944290), (25, 755432), (40, 472145), (50, 377716), (89, 212200), (100, 188858), (178, 106100), (200, 94429), (356, 53050), (445, 42440), (712, 26525), (890, 21220), (1061, 17800), (1780, 10610), (2122, 8900), (2225, 8488), (3560, 5305), (4244, 4450)]