20041021

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{20021}}^1$

素因数の和:20052

約数の個数: 16

約数和(自身を含む): 26909568

約数和(自身を除く): 6868547

約数列:

[1, 7, 11, 13, 77, 91, 143, 1001, 20021, 140147, 220231, 260273, 1541617, 1821911, 2863003, 20041021]

約数ペア:

[(1, 20041021), (7, 2863003), (11, 1821911), (13, 1541617), (77, 260273), (91, 220231), (143, 140147), (1001, 20021)]