21328559

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{59}}^1\times {\mathrm{1201}}^1$

素因数の和:1310

約数の個数: 16

約数和(自身を含む): 25386240

約数和(自身を除く): 4057681

約数列:

[1, 7, 43, 59, 301, 413, 1201, 2537, 8407, 17759, 51643, 70859, 361501, 496013, 3046937, 21328559]

約数ペア:

[(1, 21328559), (7, 3046937), (43, 496013), (59, 361501), (301, 70859), (413, 51643), (1201, 17759), (2537, 8407)]