420000

素因数分解:

$2^5\times 3^1\times 5^4\times 7^1$

素因数の和:40

約数の個数: 120

約数和(自身を含む): 1574496

約数和(自身を除く): 1154496

約数列:

[1, 2, 3, 4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 20, 21, 24, 25, 28, 30, 32, 35, 40, 42, 48, 50, 56, 60, 70, 75, 80, 84, 96, 100, 105, 112, 120, 125, 140, 150, 160, 168, 175, 200, 210, 224, 240, 250, 280, 300, 336, 350, 375, 400, 420, 480, 500, 525, 560, 600, 625, 672, 700, 750, 800, 840, 875, 1000, 1050, 1120, 1200, 1250, 1400, 1500, 1680, 1750, 1875, 2000, 2100, 2400, 2500, 2625, 2800, 3000, 3360, 3500, 3750, 4000, 4200, 4375, 5000, 5250, 5600, 6000, 7000, 7500, 8400, 8750, 10000, 10500, 12000, 13125, 14000, 15000, 16800, 17500, 20000, 21000, 26250, 28000, 30000, 35000, 42000, 52500, 60000, 70000, 84000, 105000, 140000, 210000, 420000]

約数ペア:

[(1, 420000), (2, 210000), (3, 140000), (4, 105000), (5, 84000), (6, 70000), (7, 60000), (8, 52500), (10, 42000), (12, 35000), (14, 30000), (15, 28000), (16, 26250), (20, 21000), (21, 20000), (24, 17500), (25, 16800), (28, 15000), (30, 14000), (32, 13125), (35, 12000), (40, 10500), (42, 10000), (48, 8750), (50, 8400), (56, 7500), (60, 7000), (70, 6000), (75, 5600), (80, 5250), (84, 5000), (96, 4375), (100, 4200), (105, 4000), (112, 3750), (120, 3500), (125, 3360), (140, 3000), (150, 2800), (160, 2625), (168, 2500), (175, 2400), (200, 2100), (210, 2000), (224, 1875), (240, 1750), (250, 1680), (280, 1500), (300, 1400), (336, 1250), (350, 1200), (375, 1120), (400, 1050), (420, 1000), (480, 875), (500, 840), (525, 800), (560, 750), (600, 700), (625, 672)]