2660000

素因数分解:

$2^5\times 5^4\times 7^1\times {\mathrm{19}}^1$

素因数の和:56

約数の個数: 120

約数和(自身を含む): 7872480

約数和(自身を除く): 5212480

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 19, 20, 25, 28, 32, 35, 38, 40, 50, 56, 70, 76, 80, 95, 100, 112, 125, 133, 140, 152, 160, 175, 190, 200, 224, 250, 266, 280, 304, 350, 380, 400, 475, 500, 532, 560, 608, 625, 665, 700, 760, 800, 875, 950, 1000, 1064, 1120, 1250, 1330, 1400, 1520, 1750, 1900, 2000, 2128, 2375, 2500, 2660, 2800, 3040, 3325, 3500, 3800, 4000, 4256, 4375, 4750, 5000, 5320, 5600, 6650, 7000, 7600, 8750, 9500, 10000, 10640, 11875, 13300, 14000, 15200, 16625, 17500, 19000, 20000, 21280, 23750, 26600, 28000, 33250, 35000, 38000, 47500, 53200, 66500, 70000, 76000, 83125, 95000, 106400, 133000, 140000, 166250, 190000, 266000, 332500, 380000, 532000, 665000, 1330000, 2660000]

約数ペア:

[(1, 2660000), (2, 1330000), (4, 665000), (5, 532000), (7, 380000), (8, 332500), (10, 266000), (14, 190000), (16, 166250), (19, 140000), (20, 133000), (25, 106400), (28, 95000), (32, 83125), (35, 76000), (38, 70000), (40, 66500), (50, 53200), (56, 47500), (70, 38000), (76, 35000), (80, 33250), (95, 28000), (100, 26600), (112, 23750), (125, 21280), (133, 20000), (140, 19000), (152, 17500), (160, 16625), (175, 15200), (190, 14000), (200, 13300), (224, 11875), (250, 10640), (266, 10000), (280, 9500), (304, 8750), (350, 7600), (380, 7000), (400, 6650), (475, 5600), (500, 5320), (532, 5000), (560, 4750), (608, 4375), (625, 4256), (665, 4000), (700, 3800), (760, 3500), (800, 3325), (875, 3040), (950, 2800), (1000, 2660), (1064, 2500), (1120, 2375), (1250, 2128), (1330, 2000), (1400, 1900), (1520, 1750)]