20351000

素因数分解:

$2^3\times 5^3\times {\mathrm{47}}^1\times {\mathrm{433}}^1$

素因数の和:501

約数の個数: 64

約数和(自身を含む): 48746880

約数和(自身を除く): 28395880

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 125, 188, 200, 235, 250, 376, 433, 470, 500, 866, 940, 1000, 1175, 1732, 1880, 2165, 2350, 3464, 4330, 4700, 5875, 8660, 9400, 10825, 11750, 17320, 20351, 21650, 23500, 40702, 43300, 47000, 54125, 81404, 86600, 101755, 108250, 162808, 203510, 216500, 407020, 433000, 508775, 814040, 1017550, 2035100, 2543875, 4070200, 5087750, 10175500, 20351000]

約数ペア:

[(1, 20351000), (2, 10175500), (4, 5087750), (5, 4070200), (8, 2543875), (10, 2035100), (20, 1017550), (25, 814040), (40, 508775), (47, 433000), (50, 407020), (94, 216500), (100, 203510), (125, 162808), (188, 108250), (200, 101755), (235, 86600), (250, 81404), (376, 54125), (433, 47000), (470, 43300), (500, 40702), (866, 23500), (940, 21650), (1000, 20351), (1175, 17320), (1732, 11750), (1880, 10825), (2165, 9400), (2350, 8660), (3464, 5875), (4330, 4700)]