31520000

素因数分解:

$2^8\times 5^4\times {\mathrm{197}}^1$

素因数の和:233

約数の個数: 90

約数和(自身を含む): 79020018

約数和(自身を除く): 47500018

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 25, 32, 40, 50, 64, 80, 100, 125, 128, 160, 197, 200, 250, 256, 320, 394, 400, 500, 625, 640, 788, 800, 985, 1000, 1250, 1280, 1576, 1600, 1970, 2000, 2500, 3152, 3200, 3940, 4000, 4925, 5000, 6304, 6400, 7880, 8000, 9850, 10000, 12608, 15760, 16000, 19700, 20000, 24625, 25216, 31520, 32000, 39400, 40000, 49250, 50432, 63040, 78800, 80000, 98500, 123125, 126080, 157600, 160000, 197000, 246250, 252160, 315200, 394000, 492500, 630400, 788000, 985000, 1260800, 1576000, 1970000, 3152000, 3940000, 6304000, 7880000, 15760000, 31520000]

約数ペア:

[(1, 31520000), (2, 15760000), (4, 7880000), (5, 6304000), (8, 3940000), (10, 3152000), (16, 1970000), (20, 1576000), (25, 1260800), (32, 985000), (40, 788000), (50, 630400), (64, 492500), (80, 394000), (100, 315200), (125, 252160), (128, 246250), (160, 197000), (197, 160000), (200, 157600), (250, 126080), (256, 123125), (320, 98500), (394, 80000), (400, 78800), (500, 63040), (625, 50432), (640, 49250), (788, 40000), (800, 39400), (985, 32000), (1000, 31520), (1250, 25216), (1280, 24625), (1576, 20000), (1600, 19700), (1970, 16000), (2000, 15760), (2500, 12608), (3152, 10000), (3200, 9850), (3940, 8000), (4000, 7880), (4925, 6400), (5000, 6304)]