28428040

素因数分解:

$2^3\times 5^1\times {\mathrm{223}}^1\times {\mathrm{3187}}^1$

素因数の和:3421

約数の個数: 32

約数和(自身を含む): 64270080

約数和(自身を除く): 35842040

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 223, 446, 892, 1115, 1784, 2230, 3187, 4460, 6374, 8920, 12748, 15935, 25496, 31870, 63740, 127480, 710701, 1421402, 2842804, 3553505, 5685608, 7107010, 14214020, 28428040]

約数ペア:

[(1, 28428040), (2, 14214020), (4, 7107010), (5, 5685608), (8, 3553505), (10, 2842804), (20, 1421402), (40, 710701), (223, 127480), (446, 63740), (892, 31870), (1115, 25496), (1784, 15935), (2230, 12748), (3187, 8920), (4460, 6374)]