207898220

素因数分解:

$2^2\times 5^1\times {\mathrm{421}}^1\times {\mathrm{24691}}^1$

素因数の和:25121

約数の個数: 24

約数和(自身を含む): 437641008

約数和(自身を除く): 229742788

約数列:

[1, 2, 4, 5, 10, 20, 421, 842, 1684, 2105, 4210, 8420, 24691, 49382, 98764, 123455, 246910, 493820, 10394911, 20789822, 41579644, 51974555, 103949110, 207898220]

約数ペア:

[(1, 207898220), (2, 103949110), (4, 51974555), (5, 41579644), (10, 20789822), (20, 10394911), (421, 493820), (842, 246910), (1684, 123455), (2105, 98764), (4210, 49382), (8420, 24691)]