20795500

素因数分解:

$2^2\times 5^3\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:248

約数の個数: 96

約数和(自身を含む): 52416000

約数和(自身を除く): 31620500

約数列:

[1, 2, 4, 5, 10, 11, 19, 20, 22, 25, 38, 44, 50, 55, 76, 95, 100, 110, 125, 190, 199, 209, 220, 250, 275, 380, 398, 418, 475, 500, 550, 796, 836, 950, 995, 1045, 1100, 1375, 1900, 1990, 2090, 2189, 2375, 2750, 3781, 3980, 4180, 4378, 4750, 4975, 5225, 5500, 7562, 8756, 9500, 9950, 10450, 10945, 15124, 18905, 19900, 20900, 21890, 24875, 26125, 37810, 41591, 43780, 49750, 52250, 54725, 75620, 83182, 94525, 99500, 104500, 109450, 166364, 189050, 207955, 218900, 273625, 378100, 415910, 472625, 547250, 831820, 945250, 1039775, 1094500, 1890500, 2079550, 4159100, 5198875, 10397750, 20795500]

約数ペア:

[(1, 20795500), (2, 10397750), (4, 5198875), (5, 4159100), (10, 2079550), (11, 1890500), (19, 1094500), (20, 1039775), (22, 945250), (25, 831820), (38, 547250), (44, 472625), (50, 415910), (55, 378100), (76, 273625), (95, 218900), (100, 207955), (110, 189050), (125, 166364), (190, 109450), (199, 104500), (209, 99500), (220, 94525), (250, 83182), (275, 75620), (380, 54725), (398, 52250), (418, 49750), (475, 43780), (500, 41591), (550, 37810), (796, 26125), (836, 24875), (950, 21890), (995, 20900), (1045, 19900), (1100, 18905), (1375, 15124), (1900, 10945), (1990, 10450), (2090, 9950), (2189, 9500), (2375, 8756), (2750, 7562), (3781, 5500), (3980, 5225), (4180, 4975), (4378, 4750)]