217400020

素因数分解:

$2^2\times 5^1\times {\mathrm{191}}^1\times {\mathrm{56911}}^1$

素因数の和:57111

約数の個数: 24

約数和(自身を含む): 458938368

約数和(自身を除く): 241538348

約数列:

[1, 2, 4, 5, 10, 20, 191, 382, 764, 955, 1910, 3820, 56911, 113822, 227644, 284555, 569110, 1138220, 10870001, 21740002, 43480004, 54350005, 108700010, 217400020]

約数ペア:

[(1, 217400020), (2, 108700010), (4, 54350005), (5, 43480004), (10, 21740002), (20, 10870001), (191, 1138220), (382, 569110), (764, 284555), (955, 227644), (1910, 113822), (3820, 56911)]