20612739

素因数分解:

$3^1\times 7^1\times {\mathrm{19}}^2\times {\mathrm{2719}}^1$

素因数の和:2767

約数の個数: 24

約数和(自身を含む): 33162240

約数和(自身を除く): 12549501

約数列:

[1, 3, 7, 19, 21, 57, 133, 361, 399, 1083, 2527, 2719, 7581, 8157, 19033, 51661, 57099, 154983, 361627, 981559, 1084881, 2944677, 6870913, 20612739]

約数ペア:

[(1, 20612739), (3, 6870913), (7, 2944677), (19, 1084881), (21, 981559), (57, 361627), (133, 154983), (361, 57099), (399, 51661), (1083, 19033), (2527, 8157), (2719, 7581)]