21021260800

素因数分解:

$2^{10}\times 5^2\times {\mathrm{821143}}^1$

素因数の和:821173

約数の個数: 66

約数和(自身を含む): 52107334808

約数和(自身を除く): 31086074008

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 128, 160, 200, 256, 320, 400, 512, 640, 800, 1024, 1280, 1600, 2560, 3200, 5120, 6400, 12800, 25600, 821143, 1642286, 3284572, 4105715, 6569144, 8211430, 13138288, 16422860, 20528575, 26276576, 32845720, 41057150, 52553152, 65691440, 82114300, 105106304, 131382880, 164228600, 210212608, 262765760, 328457200, 420425216, 525531520, 656914400, 840850432, 1051063040, 1313828800, 2102126080, 2627657600, 4204252160, 5255315200, 10510630400, 21021260800]

約数ペア:

[(1, 21021260800), (2, 10510630400), (4, 5255315200), (5, 4204252160), (8, 2627657600), (10, 2102126080), (16, 1313828800), (20, 1051063040), (25, 840850432), (32, 656914400), (40, 525531520), (50, 420425216), (64, 328457200), (80, 262765760), (100, 210212608), (128, 164228600), (160, 131382880), (200, 105106304), (256, 82114300), (320, 65691440), (400, 52553152), (512, 41057150), (640, 32845720), (800, 26276576), (1024, 20528575), (1280, 16422860), (1600, 13138288), (2560, 8211430), (3200, 6569144), (5120, 4105715), (6400, 3284572), (12800, 1642286), (25600, 821143)]