1980440

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{643}}^1$

素因数の和:672

約数の個数: 64

約数和(自身を含む): 5564160

約数和(自身を除く): 3583720

約数列:

[1, 2, 4, 5, 7, 8, 10, 11, 14, 20, 22, 28, 35, 40, 44, 55, 56, 70, 77, 88, 110, 140, 154, 220, 280, 308, 385, 440, 616, 643, 770, 1286, 1540, 2572, 3080, 3215, 4501, 5144, 6430, 7073, 9002, 12860, 14146, 18004, 22505, 25720, 28292, 35365, 36008, 45010, 49511, 56584, 70730, 90020, 99022, 141460, 180040, 198044, 247555, 282920, 396088, 495110, 990220, 1980440]

約数ペア:

[(1, 1980440), (2, 990220), (4, 495110), (5, 396088), (7, 282920), (8, 247555), (10, 198044), (11, 180040), (14, 141460), (20, 99022), (22, 90020), (28, 70730), (35, 56584), (40, 49511), (44, 45010), (55, 36008), (56, 35365), (70, 28292), (77, 25720), (88, 22505), (110, 18004), (140, 14146), (154, 12860), (220, 9002), (280, 7073), (308, 6430), (385, 5144), (440, 4501), (616, 3215), (643, 3080), (770, 2572), (1286, 1540)]