20180921379

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{79}}^1\times {\mathrm{1980269}}^1$

素因数の和:1980394

約数の個数: 16

約数和(自身を含む): 27882201600

約数和(自身を除く): 7701280221

約数列:

[1, 3, 43, 79, 129, 237, 3397, 10191, 1980269, 5940807, 85151567, 156441251, 255454701, 469323753, 6726973793, 20180921379]

約数ペア:

[(1, 20180921379), (3, 6726973793), (43, 469323753), (79, 255454701), (129, 156441251), (237, 85151567), (3397, 5940807), (10191, 1980269)]