620378500

素因数分解:

$2^2\times 5^3\times 7^1\times {\mathrm{19}}^2\times {\mathrm{491}}^1$

素因数の和:555

約数の個数: 144

約数和(自身を含む): 1637580672

約数和(自身を除く): 1017202172

約数列:

[1, 2, 4, 5, 7, 10, 14, 19, 20, 25, 28, 35, 38, 50, 70, 76, 95, 100, 125, 133, 140, 175, 190, 250, 266, 350, 361, 380, 475, 491, 500, 532, 665, 700, 722, 875, 950, 982, 1330, 1444, 1750, 1805, 1900, 1964, 2375, 2455, 2527, 2660, 3325, 3437, 3500, 3610, 4750, 4910, 5054, 6650, 6874, 7220, 9025, 9329, 9500, 9820, 10108, 12275, 12635, 13300, 13748, 16625, 17185, 18050, 18658, 24550, 25270, 33250, 34370, 36100, 37316, 45125, 46645, 49100, 50540, 61375, 63175, 65303, 66500, 68740, 85925, 90250, 93290, 122750, 126350, 130606, 171850, 177251, 180500, 186580, 233225, 245500, 252700, 261212, 315875, 326515, 343700, 354502, 429625, 466450, 631750, 653030, 709004, 859250, 886255, 932900, 1166125, 1240757, 1263500, 1306060, 1632575, 1718500, 1772510, 2332250, 2481514, 3265150, 3545020, 4431275, 4664500, 4963028, 6203785, 6530300, 8162875, 8862550, 12407570, 16325750, 17725100, 22156375, 24815140, 31018925, 32651500, 44312750, 62037850, 88625500, 124075700, 155094625, 310189250, 620378500]

約数ペア:

[(1, 620378500), (2, 310189250), (4, 155094625), (5, 124075700), (7, 88625500), (10, 62037850), (14, 44312750), (19, 32651500), (20, 31018925), (25, 24815140), (28, 22156375), (35, 17725100), (38, 16325750), (50, 12407570), (70, 8862550), (76, 8162875), (95, 6530300), (100, 6203785), (125, 4963028), (133, 4664500), (140, 4431275), (175, 3545020), (190, 3265150), (250, 2481514), (266, 2332250), (350, 1772510), (361, 1718500), (380, 1632575), (475, 1306060), (491, 1263500), (500, 1240757), (532, 1166125), (665, 932900), (700, 886255), (722, 859250), (875, 709004), (950, 653030), (982, 631750), (1330, 466450), (1444, 429625), (1750, 354502), (1805, 343700), (1900, 326515), (1964, 315875), (2375, 261212), (2455, 252700), (2527, 245500), (2660, 233225), (3325, 186580), (3437, 180500), (3500, 177251), (3610, 171850), (4750, 130606), (4910, 126350), (5054, 122750), (6650, 93290), (6874, 90250), (7220, 85925), (9025, 68740), (9329, 66500), (9500, 65303), (9820, 63175), (10108, 61375), (12275, 50540), (12635, 49100), (13300, 46645), (13748, 45125), (16625, 37316), (17185, 36100), (18050, 34370), (18658, 33250), (24550, 25270)]