189620000

素因数分解:

$2^5\times 5^4\times {\mathrm{19}}^1\times {\mathrm{499}}^1$

素因数の和:548

約数の個数: 120

約数和(自身を含む): 492030000

約数和(自身を除く): 302410000

約数列:

[1, 2, 4, 5, 8, 10, 16, 19, 20, 25, 32, 38, 40, 50, 76, 80, 95, 100, 125, 152, 160, 190, 200, 250, 304, 380, 400, 475, 499, 500, 608, 625, 760, 800, 950, 998, 1000, 1250, 1520, 1900, 1996, 2000, 2375, 2495, 2500, 3040, 3800, 3992, 4000, 4750, 4990, 5000, 7600, 7984, 9481, 9500, 9980, 10000, 11875, 12475, 15200, 15968, 18962, 19000, 19960, 20000, 23750, 24950, 37924, 38000, 39920, 47405, 47500, 49900, 62375, 75848, 76000, 79840, 94810, 95000, 99800, 124750, 151696, 189620, 190000, 199600, 237025, 249500, 303392, 311875, 379240, 380000, 399200, 474050, 499000, 623750, 758480, 948100, 998000, 1185125, 1247500, 1516960, 1896200, 1996000, 2370250, 2495000, 3792400, 4740500, 4990000, 5925625, 7584800, 9481000, 9980000, 11851250, 18962000, 23702500, 37924000, 47405000, 94810000, 189620000]

約数ペア:

[(1, 189620000), (2, 94810000), (4, 47405000), (5, 37924000), (8, 23702500), (10, 18962000), (16, 11851250), (19, 9980000), (20, 9481000), (25, 7584800), (32, 5925625), (38, 4990000), (40, 4740500), (50, 3792400), (76, 2495000), (80, 2370250), (95, 1996000), (100, 1896200), (125, 1516960), (152, 1247500), (160, 1185125), (190, 998000), (200, 948100), (250, 758480), (304, 623750), (380, 499000), (400, 474050), (475, 399200), (499, 380000), (500, 379240), (608, 311875), (625, 303392), (760, 249500), (800, 237025), (950, 199600), (998, 190000), (1000, 189620), (1250, 151696), (1520, 124750), (1900, 99800), (1996, 95000), (2000, 94810), (2375, 79840), (2495, 76000), (2500, 75848), (3040, 62375), (3800, 49900), (3992, 47500), (4000, 47405), (4750, 39920), (4990, 38000), (5000, 37924), (7600, 24950), (7984, 23750), (9481, 20000), (9500, 19960), (9980, 19000), (10000, 18962), (11875, 15968), (12475, 15200)]