20454981

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{521}}^1\times {\mathrm{569}}^1$

素因数の和:1116

約数の個数: 16

約数和(自身を含む): 28563840

約数和(自身を除く): 8108859

約数列:

[1, 3, 23, 69, 521, 569, 1563, 1707, 11983, 13087, 35949, 39261, 296449, 889347, 6818327, 20454981]

約数ペア:

[(1, 20454981), (3, 6818327), (23, 889347), (69, 296449), (521, 39261), (569, 35949), (1563, 13087), (1707, 11983)]