21394000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^1\times {\mathrm{563}}^1$

素因数の和:605

約数の個数: 80

約数和(自身を含む): 54550080

約数和(自身を除く): 33156080

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 38, 40, 50, 76, 80, 95, 100, 125, 152, 190, 200, 250, 304, 380, 400, 475, 500, 563, 760, 950, 1000, 1126, 1520, 1900, 2000, 2252, 2375, 2815, 3800, 4504, 4750, 5630, 7600, 9008, 9500, 10697, 11260, 14075, 19000, 21394, 22520, 28150, 38000, 42788, 45040, 53485, 56300, 70375, 85576, 106970, 112600, 140750, 171152, 213940, 225200, 267425, 281500, 427880, 534850, 563000, 855760, 1069700, 1126000, 1337125, 2139400, 2674250, 4278800, 5348500, 10697000, 21394000]

約数ペア:

[(1, 21394000), (2, 10697000), (4, 5348500), (5, 4278800), (8, 2674250), (10, 2139400), (16, 1337125), (19, 1126000), (20, 1069700), (25, 855760), (38, 563000), (40, 534850), (50, 427880), (76, 281500), (80, 267425), (95, 225200), (100, 213940), (125, 171152), (152, 140750), (190, 112600), (200, 106970), (250, 85576), (304, 70375), (380, 56300), (400, 53485), (475, 45040), (500, 42788), (563, 38000), (760, 28150), (950, 22520), (1000, 21394), (1126, 19000), (1520, 14075), (1900, 11260), (2000, 10697), (2252, 9500), (2375, 9008), (2815, 7600), (3800, 5630), (4504, 4750)]