15760000

素因数分解:

$2^7\times 5^4\times {\mathrm{197}}^1$

素因数の和:231

約数の個数: 80

約数和(自身を含む): 39432690

約数和(自身を除く): 23672690

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 197, 200, 250, 320, 394, 400, 500, 625, 640, 788, 800, 985, 1000, 1250, 1576, 1600, 1970, 2000, 2500, 3152, 3200, 3940, 4000, 4925, 5000, 6304, 7880, 8000, 9850, 10000, 12608, 15760, 16000, 19700, 20000, 24625, 25216, 31520, 39400, 40000, 49250, 63040, 78800, 80000, 98500, 123125, 126080, 157600, 197000, 246250, 315200, 394000, 492500, 630400, 788000, 985000, 1576000, 1970000, 3152000, 3940000, 7880000, 15760000]

約数ペア:

[(1, 15760000), (2, 7880000), (4, 3940000), (5, 3152000), (8, 1970000), (10, 1576000), (16, 985000), (20, 788000), (25, 630400), (32, 492500), (40, 394000), (50, 315200), (64, 246250), (80, 197000), (100, 157600), (125, 126080), (128, 123125), (160, 98500), (197, 80000), (200, 78800), (250, 63040), (320, 49250), (394, 40000), (400, 39400), (500, 31520), (625, 25216), (640, 24625), (788, 20000), (800, 19700), (985, 16000), (1000, 15760), (1250, 12608), (1576, 10000), (1600, 9850), (1970, 8000), (2000, 7880), (2500, 6304), (3152, 5000), (3200, 4925), (3940, 4000)]