20521293

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{197}}^1\times {\mathrm{2671}}^1$

素因数の和:2884

約数の個数: 16

約数和(自身を含む): 29627136

約数和(自身を除く): 9105843

約数列:

[1, 3, 13, 39, 197, 591, 2561, 2671, 7683, 8013, 34723, 104169, 526187, 1578561, 6840431, 20521293]

約数ペア:

[(1, 20521293), (3, 6840431), (13, 1578561), (39, 526187), (197, 104169), (591, 34723), (2561, 8013), (2671, 7683)]