20904015

素因数分解:

$3^1\times 5^1\times {\mathrm{11}}^1\times {\mathrm{126691}}^1$

素因数の和:126710

約数の個数: 16

約数和(自身を含む): 36487296

約数和(自身を除く): 15583281

約数列:

[1, 3, 5, 11, 15, 33, 55, 165, 126691, 380073, 633455, 1393601, 1900365, 4180803, 6968005, 20904015]

約数ペア:

[(1, 20904015), (3, 6968005), (5, 4180803), (11, 1900365), (15, 1393601), (33, 633455), (55, 380073), (165, 126691)]