20213511

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{53}}^1\times {\mathrm{6691}}^1$

素因数の和:6766

約数の個数: 16

約数和(自身を含む): 28909440

約数和(自身を除く): 8695929

約数列:

[1, 3, 19, 53, 57, 159, 1007, 3021, 6691, 20073, 127129, 354623, 381387, 1063869, 6737837, 20213511]

約数ペア:

[(1, 20213511), (3, 6737837), (19, 1063869), (53, 381387), (57, 354623), (159, 127129), (1007, 20073), (3021, 6691)]