51988750

素因数分解:

$2^1\times 5^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{199}}^1$

素因数の和:251

約数の個数: 80

約数和(自身を含む): 112464000

約数和(自身を除く): 60475250

約数列:

[1, 2, 5, 10, 11, 19, 22, 25, 38, 50, 55, 95, 110, 125, 190, 199, 209, 250, 275, 398, 418, 475, 550, 625, 950, 995, 1045, 1250, 1375, 1990, 2090, 2189, 2375, 2750, 3781, 4378, 4750, 4975, 5225, 6875, 7562, 9950, 10450, 10945, 11875, 13750, 18905, 21890, 23750, 24875, 26125, 37810, 41591, 49750, 52250, 54725, 83182, 94525, 109450, 124375, 130625, 189050, 207955, 248750, 261250, 273625, 415910, 472625, 547250, 945250, 1039775, 1368125, 2079550, 2363125, 2736250, 4726250, 5198875, 10397750, 25994375, 51988750]

約数ペア:

[(1, 51988750), (2, 25994375), (5, 10397750), (10, 5198875), (11, 4726250), (19, 2736250), (22, 2363125), (25, 2079550), (38, 1368125), (50, 1039775), (55, 945250), (95, 547250), (110, 472625), (125, 415910), (190, 273625), (199, 261250), (209, 248750), (250, 207955), (275, 189050), (398, 130625), (418, 124375), (475, 109450), (550, 94525), (625, 83182), (950, 54725), (995, 52250), (1045, 49750), (1250, 41591), (1375, 37810), (1990, 26125), (2090, 24875), (2189, 23750), (2375, 21890), (2750, 18905), (3781, 13750), (4378, 11875), (4750, 10945), (4975, 10450), (5225, 9950), (6875, 7562)]