291304720

素因数分解:

$2^4\times 5^1\times 7^1\times {\mathrm{643}}^1\times {\mathrm{809}}^1$

素因数の和:1472

約数の個数: 80

約数和(自身を含む): 776200320

約数和(自身を除く): 484895600

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 16, 20, 28, 35, 40, 56, 70, 80, 112, 140, 280, 560, 643, 809, 1286, 1618, 2572, 3215, 3236, 4045, 4501, 5144, 5663, 6430, 6472, 8090, 9002, 10288, 11326, 12860, 12944, 16180, 18004, 22505, 22652, 25720, 28315, 32360, 36008, 45010, 45304, 51440, 56630, 64720, 72016, 90020, 90608, 113260, 180040, 226520, 360080, 453040, 520187, 1040374, 2080748, 2600935, 3641309, 4161496, 5201870, 7282618, 8322992, 10403740, 14565236, 18206545, 20807480, 29130472, 36413090, 41614960, 58260944, 72826180, 145652360, 291304720]

約数ペア:

[(1, 291304720), (2, 145652360), (4, 72826180), (5, 58260944), (7, 41614960), (8, 36413090), (10, 29130472), (14, 20807480), (16, 18206545), (20, 14565236), (28, 10403740), (35, 8322992), (40, 7282618), (56, 5201870), (70, 4161496), (80, 3641309), (112, 2600935), (140, 2080748), (280, 1040374), (560, 520187), (643, 453040), (809, 360080), (1286, 226520), (1618, 180040), (2572, 113260), (3215, 90608), (3236, 90020), (4045, 72016), (4501, 64720), (5144, 56630), (5663, 51440), (6430, 45304), (6472, 45010), (8090, 36008), (9002, 32360), (10288, 28315), (11326, 25720), (12860, 22652), (12944, 22505), (16180, 18004)]