20406249

素因数分解:

$3^4\times {\mathrm{191}}^1\times {\mathrm{1319}}^1$

素因数の和:1522

約数の個数: 20

約数和(自身を含む): 30666240

約数和(自身を除く): 10259991

約数列:

[1, 3, 9, 27, 81, 191, 573, 1319, 1719, 3957, 5157, 11871, 15471, 35613, 106839, 251929, 755787, 2267361, 6802083, 20406249]

約数ペア:

[(1, 20406249), (3, 6802083), (9, 2267361), (27, 755787), (81, 251929), (191, 106839), (573, 35613), (1319, 15471), (1719, 11871), (3957, 5157)]