1244000000

素因数分解:

$2^8\times 5^6\times {\mathrm{311}}^1$

素因数の和:357

約数の個数: 126

約数和(自身を含む): 3113866392

約数和(自身を除く): 1869866392

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 200, 250, 256, 311, 320, 400, 500, 622, 625, 640, 800, 1000, 1244, 1250, 1280, 1555, 1600, 2000, 2488, 2500, 3110, 3125, 3200, 4000, 4976, 5000, 6220, 6250, 6400, 7775, 8000, 9952, 10000, 12440, 12500, 15550, 15625, 16000, 19904, 20000, 24880, 25000, 31100, 31250, 32000, 38875, 39808, 40000, 49760, 50000, 62200, 62500, 77750, 79616, 80000, 99520, 100000, 124400, 125000, 155500, 160000, 194375, 199040, 200000, 248800, 250000, 311000, 388750, 398080, 400000, 497600, 500000, 622000, 777500, 800000, 971875, 995200, 1000000, 1244000, 1555000, 1943750, 1990400, 2000000, 2488000, 3110000, 3887500, 4000000, 4859375, 4976000, 6220000, 7775000, 9718750, 9952000, 12440000, 15550000, 19437500, 24880000, 31100000, 38875000, 49760000, 62200000, 77750000, 124400000, 155500000, 248800000, 311000000, 622000000, 1244000000]

約数ペア:

[(1, 1244000000), (2, 622000000), (4, 311000000), (5, 248800000), (8, 155500000), (10, 124400000), (16, 77750000), (20, 62200000), (25, 49760000), (32, 38875000), (40, 31100000), (50, 24880000), (64, 19437500), (80, 15550000), (100, 12440000), (125, 9952000), (128, 9718750), (160, 7775000), (200, 6220000), (250, 4976000), (256, 4859375), (311, 4000000), (320, 3887500), (400, 3110000), (500, 2488000), (622, 2000000), (625, 1990400), (640, 1943750), (800, 1555000), (1000, 1244000), (1244, 1000000), (1250, 995200), (1280, 971875), (1555, 800000), (1600, 777500), (2000, 622000), (2488, 500000), (2500, 497600), (3110, 400000), (3125, 398080), (3200, 388750), (4000, 311000), (4976, 250000), (5000, 248800), (6220, 200000), (6250, 199040), (6400, 194375), (7775, 160000), (8000, 155500), (9952, 125000), (10000, 124400), (12440, 100000), (12500, 99520), (15550, 80000), (15625, 79616), (16000, 77750), (19904, 62500), (20000, 62200), (24880, 50000), (25000, 49760), (31100, 40000), (31250, 39808), (32000, 38875)]