20685000

素因数分解:

$2^3\times 3^1\times 5^4\times 7^1\times {\mathrm{197}}^1$

素因数の和:233

約数の個数: 160

約数和(自身を含む): 74226240

約数和(自身を除く): 53541240

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 20, 21, 24, 25, 28, 30, 35, 40, 42, 50, 56, 60, 70, 75, 84, 100, 105, 120, 125, 140, 150, 168, 175, 197, 200, 210, 250, 280, 300, 350, 375, 394, 420, 500, 525, 591, 600, 625, 700, 750, 788, 840, 875, 985, 1000, 1050, 1182, 1250, 1379, 1400, 1500, 1576, 1750, 1875, 1970, 2100, 2364, 2500, 2625, 2758, 2955, 3000, 3500, 3750, 3940, 4137, 4200, 4375, 4728, 4925, 5000, 5250, 5516, 5910, 6895, 7000, 7500, 7880, 8274, 8750, 9850, 10500, 11032, 11820, 13125, 13790, 14775, 15000, 16548, 17500, 19700, 20685, 21000, 23640, 24625, 26250, 27580, 29550, 33096, 34475, 35000, 39400, 41370, 49250, 52500, 55160, 59100, 68950, 73875, 82740, 98500, 103425, 105000, 118200, 123125, 137900, 147750, 165480, 172375, 197000, 206850, 246250, 275800, 295500, 344750, 369375, 413700, 492500, 517125, 591000, 689500, 738750, 827400, 861875, 985000, 1034250, 1379000, 1477500, 1723750, 2068500, 2585625, 2955000, 3447500, 4137000, 5171250, 6895000, 10342500, 20685000]

約数ペア:

[(1, 20685000), (2, 10342500), (3, 6895000), (4, 5171250), (5, 4137000), (6, 3447500), (7, 2955000), (8, 2585625), (10, 2068500), (12, 1723750), (14, 1477500), (15, 1379000), (20, 1034250), (21, 985000), (24, 861875), (25, 827400), (28, 738750), (30, 689500), (35, 591000), (40, 517125), (42, 492500), (50, 413700), (56, 369375), (60, 344750), (70, 295500), (75, 275800), (84, 246250), (100, 206850), (105, 197000), (120, 172375), (125, 165480), (140, 147750), (150, 137900), (168, 123125), (175, 118200), (197, 105000), (200, 103425), (210, 98500), (250, 82740), (280, 73875), (300, 68950), (350, 59100), (375, 55160), (394, 52500), (420, 49250), (500, 41370), (525, 39400), (591, 35000), (600, 34475), (625, 33096), (700, 29550), (750, 27580), (788, 26250), (840, 24625), (875, 23640), (985, 21000), (1000, 20685), (1050, 19700), (1182, 17500), (1250, 16548), (1379, 15000), (1400, 14775), (1500, 13790), (1576, 13125), (1750, 11820), (1875, 11032), (1970, 10500), (2100, 9850), (2364, 8750), (2500, 8274), (2625, 7880), (2758, 7500), (2955, 7000), (3000, 6895), (3500, 5910), (3750, 5516), (3940, 5250), (4137, 5000), (4200, 4925), (4375, 4728)]