21258899

素因数分解:

${\mathrm{43}}^1\times {\mathrm{47}}^1\times {\mathrm{67}}^1\times {\mathrm{157}}^1$

素因数の和:314

約数の個数: 16

約数和(自身を含む): 22691328

約数和(自身を除く): 1432429

約数列:

[1, 43, 47, 67, 157, 2021, 2881, 3149, 6751, 7379, 10519, 135407, 317297, 452317, 494393, 21258899]

約数ペア:

[(1, 21258899), (43, 494393), (47, 452317), (67, 317297), (157, 135407), (2021, 10519), (2881, 7379), (3149, 6751)]