21638800

素因数分解:

$2^4\times 5^2\times {\mathrm{47}}^1\times {\mathrm{1151}}^1$

素因数の和:1216

約数の個数: 60

約数和(自身を含む): 53139456

約数和(自身を除く): 31500656

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 40, 47, 50, 80, 94, 100, 188, 200, 235, 376, 400, 470, 752, 940, 1151, 1175, 1880, 2302, 2350, 3760, 4604, 4700, 5755, 9208, 9400, 11510, 18416, 18800, 23020, 28775, 46040, 54097, 57550, 92080, 108194, 115100, 216388, 230200, 270485, 432776, 460400, 540970, 865552, 1081940, 1352425, 2163880, 2704850, 4327760, 5409700, 10819400, 21638800]

約数ペア:

[(1, 21638800), (2, 10819400), (4, 5409700), (5, 4327760), (8, 2704850), (10, 2163880), (16, 1352425), (20, 1081940), (25, 865552), (40, 540970), (47, 460400), (50, 432776), (80, 270485), (94, 230200), (100, 216388), (188, 115100), (200, 108194), (235, 92080), (376, 57550), (400, 54097), (470, 46040), (752, 28775), (940, 23020), (1151, 18800), (1175, 18416), (1880, 11510), (2302, 9400), (2350, 9208), (3760, 5755), (4604, 4700)]