2005720

素因数分解:

$2^3\times 5^1\times {\mathrm{41}}^1\times {\mathrm{1223}}^1$

素因数の和:1275

約数の個数: 32

約数和(自身を含む): 4626720

約数和(自身を除く): 2621000

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 41, 82, 164, 205, 328, 410, 820, 1223, 1640, 2446, 4892, 6115, 9784, 12230, 24460, 48920, 50143, 100286, 200572, 250715, 401144, 501430, 1002860, 2005720]

約数ペア:

[(1, 2005720), (2, 1002860), (4, 501430), (5, 401144), (8, 250715), (10, 200572), (20, 100286), (40, 50143), (41, 48920), (82, 24460), (164, 12230), (205, 9784), (328, 6115), (410, 4892), (820, 2446), (1223, 1640)]