21308020

素因数分解:

$2^2\times 5^1\times {\mathrm{367}}^1\times {\mathrm{2903}}^1$

素因数の和:3279

約数の個数: 24

約数和(自身を含む): 44884224

約数和(自身を除く): 23576204

約数列:

[1, 2, 4, 5, 10, 20, 367, 734, 1468, 1835, 2903, 3670, 5806, 7340, 11612, 14515, 29030, 58060, 1065401, 2130802, 4261604, 5327005, 10654010, 21308020]

約数ペア:

[(1, 21308020), (2, 10654010), (4, 5327005), (5, 4261604), (10, 2130802), (20, 1065401), (367, 58060), (734, 29030), (1468, 14515), (1835, 11612), (2903, 7340), (3670, 5806)]