18706000

素因数分解:

$2^4\times 5^3\times {\mathrm{47}}^1\times {\mathrm{199}}^1$

素因数の和:269

約数の個数: 80

約数和(自身を含む): 46425600

約数和(自身を除く): 27719600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 47, 50, 80, 94, 100, 125, 188, 199, 200, 235, 250, 376, 398, 400, 470, 500, 752, 796, 940, 995, 1000, 1175, 1592, 1880, 1990, 2000, 2350, 3184, 3760, 3980, 4700, 4975, 5875, 7960, 9353, 9400, 9950, 11750, 15920, 18706, 18800, 19900, 23500, 24875, 37412, 39800, 46765, 47000, 49750, 74824, 79600, 93530, 94000, 99500, 149648, 187060, 199000, 233825, 374120, 398000, 467650, 748240, 935300, 1169125, 1870600, 2338250, 3741200, 4676500, 9353000, 18706000]

約数ペア:

[(1, 18706000), (2, 9353000), (4, 4676500), (5, 3741200), (8, 2338250), (10, 1870600), (16, 1169125), (20, 935300), (25, 748240), (40, 467650), (47, 398000), (50, 374120), (80, 233825), (94, 199000), (100, 187060), (125, 149648), (188, 99500), (199, 94000), (200, 93530), (235, 79600), (250, 74824), (376, 49750), (398, 47000), (400, 46765), (470, 39800), (500, 37412), (752, 24875), (796, 23500), (940, 19900), (995, 18800), (1000, 18706), (1175, 15920), (1592, 11750), (1880, 9950), (1990, 9400), (2000, 9353), (2350, 7960), (3184, 5875), (3760, 4975), (3980, 4700)]