20688473

素因数分解:

${\mathrm{13}}^2\times {\mathrm{17}}^1\times {\mathrm{19}}^1\times {\mathrm{379}}^1$

素因数の和:441

約数の個数: 24

約数和(自身を含む): 25034400

約数和(自身を除く): 4345927

約数列:

[1, 13, 17, 19, 169, 221, 247, 323, 379, 2873, 3211, 4199, 4927, 6443, 7201, 54587, 64051, 83759, 93613, 122417, 1088867, 1216969, 1591421, 20688473]

約数ペア:

[(1, 20688473), (13, 1591421), (17, 1216969), (19, 1088867), (169, 122417), (221, 93613), (247, 83759), (323, 64051), (379, 54587), (2873, 7201), (3211, 6443), (4199, 4927)]