20353921

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3559}}^1$

素因数の和:3628

約数の個数: 16

約数和(自身を含む): 25062400

約数和(自身を除く): 4708479

約数列:

[1, 7, 19, 43, 133, 301, 817, 3559, 5719, 24913, 67621, 153037, 473347, 1071259, 2907703, 20353921]

約数ペア:

[(1, 20353921), (7, 2907703), (19, 1071259), (43, 473347), (133, 153037), (301, 67621), (817, 24913), (3559, 5719)]