20087800

素因数分解:

$2^3\times 5^2\times {\mathrm{47}}^1\times {\mathrm{2137}}^1$

素因数の和:2200

約数の個数: 48

約数和(自身を含む): 47720160

約数和(自身を除く): 27632360

約数列:

[1, 2, 4, 5, 8, 10, 20, 25, 40, 47, 50, 94, 100, 188, 200, 235, 376, 470, 940, 1175, 1880, 2137, 2350, 4274, 4700, 8548, 9400, 10685, 17096, 21370, 42740, 53425, 85480, 100439, 106850, 200878, 213700, 401756, 427400, 502195, 803512, 1004390, 2008780, 2510975, 4017560, 5021950, 10043900, 20087800]

約数ペア:

[(1, 20087800), (2, 10043900), (4, 5021950), (5, 4017560), (8, 2510975), (10, 2008780), (20, 1004390), (25, 803512), (40, 502195), (47, 427400), (50, 401756), (94, 213700), (100, 200878), (188, 106850), (200, 100439), (235, 85480), (376, 53425), (470, 42740), (940, 21370), (1175, 17096), (1880, 10685), (2137, 9400), (2350, 8548), (4274, 4700)]