21050020

素因数分解:

$2^2\times 5^1\times {\mathrm{59}}^1\times {\mathrm{17839}}^1$

素因数の和:17907

約数の個数: 24

約数和(自身を含む): 44956800

約数和(自身を除く): 23906780

約数列:

[1, 2, 4, 5, 10, 20, 59, 118, 236, 295, 590, 1180, 17839, 35678, 71356, 89195, 178390, 356780, 1052501, 2105002, 4210004, 5262505, 10525010, 21050020]

約数ペア:

[(1, 21050020), (2, 10525010), (4, 5262505), (5, 4210004), (10, 2105002), (20, 1052501), (59, 356780), (118, 178390), (236, 89195), (295, 71356), (590, 35678), (1180, 17839)]