20945493

素因数分解:

$3^3\times {\mathrm{139}}^1\times {\mathrm{5581}}^1$

素因数の和:5729

約数の個数: 16

約数和(自身を含む): 31259200

約数和(自身を除く): 10313707

約数列:

[1, 3, 9, 27, 139, 417, 1251, 3753, 5581, 16743, 50229, 150687, 775759, 2327277, 6981831, 20945493]

約数ペア:

[(1, 20945493), (3, 6981831), (9, 2327277), (27, 775759), (139, 150687), (417, 50229), (1251, 16743), (3753, 5581)]