18518000

素因数分解:

$2^4\times 5^3\times {\mathrm{47}}^1\times {\mathrm{197}}^1$

素因数の和:267

約数の個数: 80

約数和(自身を含む): 45961344

約数和(自身を除く): 27443344

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 47, 50, 80, 94, 100, 125, 188, 197, 200, 235, 250, 376, 394, 400, 470, 500, 752, 788, 940, 985, 1000, 1175, 1576, 1880, 1970, 2000, 2350, 3152, 3760, 3940, 4700, 4925, 5875, 7880, 9259, 9400, 9850, 11750, 15760, 18518, 18800, 19700, 23500, 24625, 37036, 39400, 46295, 47000, 49250, 74072, 78800, 92590, 94000, 98500, 148144, 185180, 197000, 231475, 370360, 394000, 462950, 740720, 925900, 1157375, 1851800, 2314750, 3703600, 4629500, 9259000, 18518000]

約数ペア:

[(1, 18518000), (2, 9259000), (4, 4629500), (5, 3703600), (8, 2314750), (10, 1851800), (16, 1157375), (20, 925900), (25, 740720), (40, 462950), (47, 394000), (50, 370360), (80, 231475), (94, 197000), (100, 185180), (125, 148144), (188, 98500), (197, 94000), (200, 92590), (235, 78800), (250, 74072), (376, 49250), (394, 47000), (400, 46295), (470, 39400), (500, 37036), (752, 24625), (788, 23500), (940, 19700), (985, 18800), (1000, 18518), (1175, 15760), (1576, 11750), (1880, 9850), (1970, 9400), (2000, 9259), (2350, 7880), (3152, 5875), (3760, 4925), (3940, 4700)]