279440000

素因数分解:

$2^7\times 5^4\times 7^1\times {\mathrm{499}}^1$

素因数の和:540

約数の個数: 160

約数和(自身を含む): 796620000

約数和(自身を除く): 517180000

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 25, 28, 32, 35, 40, 50, 56, 64, 70, 80, 100, 112, 125, 128, 140, 160, 175, 200, 224, 250, 280, 320, 350, 400, 448, 499, 500, 560, 625, 640, 700, 800, 875, 896, 998, 1000, 1120, 1250, 1400, 1600, 1750, 1996, 2000, 2240, 2495, 2500, 2800, 3200, 3493, 3500, 3992, 4000, 4375, 4480, 4990, 5000, 5600, 6986, 7000, 7984, 8000, 8750, 9980, 10000, 11200, 12475, 13972, 14000, 15968, 16000, 17465, 17500, 19960, 20000, 22400, 24950, 27944, 28000, 31936, 34930, 35000, 39920, 40000, 49900, 55888, 56000, 62375, 63872, 69860, 70000, 79840, 80000, 87325, 99800, 111776, 112000, 124750, 139720, 140000, 159680, 174650, 199600, 223552, 249500, 279440, 280000, 311875, 319360, 349300, 399200, 436625, 447104, 499000, 558880, 560000, 623750, 698600, 798400, 873250, 998000, 1117760, 1247500, 1397200, 1596800, 1746500, 1996000, 2183125, 2235520, 2495000, 2794400, 3493000, 3992000, 4366250, 4990000, 5588800, 6986000, 7984000, 8732500, 9980000, 11177600, 13972000, 17465000, 19960000, 27944000, 34930000, 39920000, 55888000, 69860000, 139720000, 279440000]

約数ペア:

[(1, 279440000), (2, 139720000), (4, 69860000), (5, 55888000), (7, 39920000), (8, 34930000), (10, 27944000), (14, 19960000), (16, 17465000), (20, 13972000), (25, 11177600), (28, 9980000), (32, 8732500), (35, 7984000), (40, 6986000), (50, 5588800), (56, 4990000), (64, 4366250), (70, 3992000), (80, 3493000), (100, 2794400), (112, 2495000), (125, 2235520), (128, 2183125), (140, 1996000), (160, 1746500), (175, 1596800), (200, 1397200), (224, 1247500), (250, 1117760), (280, 998000), (320, 873250), (350, 798400), (400, 698600), (448, 623750), (499, 560000), (500, 558880), (560, 499000), (625, 447104), (640, 436625), (700, 399200), (800, 349300), (875, 319360), (896, 311875), (998, 280000), (1000, 279440), (1120, 249500), (1250, 223552), (1400, 199600), (1600, 174650), (1750, 159680), (1996, 140000), (2000, 139720), (2240, 124750), (2495, 112000), (2500, 111776), (2800, 99800), (3200, 87325), (3493, 80000), (3500, 79840), (3992, 70000), (4000, 69860), (4375, 63872), (4480, 62375), (4990, 56000), (5000, 55888), (5600, 49900), (6986, 40000), (7000, 39920), (7984, 35000), (8000, 34930), (8750, 31936), (9980, 28000), (10000, 27944), (11200, 24950), (12475, 22400), (13972, 20000), (14000, 19960), (15968, 17500), (16000, 17465)]