20102000

素因数分解:

$2^4\times 5^3\times {\mathrm{19}}^1\times {\mathrm{23}}^2$

素因数の和:88

約数の個数: 120

約数和(自身を含む): 53486160

約数和(自身を除く): 33384160

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 23, 25, 38, 40, 46, 50, 76, 80, 92, 95, 100, 115, 125, 152, 184, 190, 200, 230, 250, 304, 368, 380, 400, 437, 460, 475, 500, 529, 575, 760, 874, 920, 950, 1000, 1058, 1150, 1520, 1748, 1840, 1900, 2000, 2116, 2185, 2300, 2375, 2645, 2875, 3496, 3800, 4232, 4370, 4600, 4750, 5290, 5750, 6992, 7600, 8464, 8740, 9200, 9500, 10051, 10580, 10925, 11500, 13225, 17480, 19000, 20102, 21160, 21850, 23000, 26450, 34960, 38000, 40204, 42320, 43700, 46000, 50255, 52900, 54625, 66125, 80408, 87400, 100510, 105800, 109250, 132250, 160816, 174800, 201020, 211600, 218500, 251275, 264500, 402040, 437000, 502550, 529000, 804080, 874000, 1005100, 1058000, 1256375, 2010200, 2512750, 4020400, 5025500, 10051000, 20102000]

約数ペア:

[(1, 20102000), (2, 10051000), (4, 5025500), (5, 4020400), (8, 2512750), (10, 2010200), (16, 1256375), (19, 1058000), (20, 1005100), (23, 874000), (25, 804080), (38, 529000), (40, 502550), (46, 437000), (50, 402040), (76, 264500), (80, 251275), (92, 218500), (95, 211600), (100, 201020), (115, 174800), (125, 160816), (152, 132250), (184, 109250), (190, 105800), (200, 100510), (230, 87400), (250, 80408), (304, 66125), (368, 54625), (380, 52900), (400, 50255), (437, 46000), (460, 43700), (475, 42320), (500, 40204), (529, 38000), (575, 34960), (760, 26450), (874, 23000), (920, 21850), (950, 21160), (1000, 20102), (1058, 19000), (1150, 17480), (1520, 13225), (1748, 11500), (1840, 10925), (1900, 10580), (2000, 10051), (2116, 9500), (2185, 9200), (2300, 8740), (2375, 8464), (2645, 7600), (2875, 6992), (3496, 5750), (3800, 5290), (4232, 4750), (4370, 4600)]