21000686707

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2997101}}^1$

素因数の和:2997139

約数の個数: 24

約数和(自身を含む): 28700248752

約数和(自身を除く): 7699562045

約数列:

[1, 7, 11, 13, 49, 77, 91, 143, 539, 637, 1001, 7007, 2997101, 20979707, 32968111, 38962313, 146857949, 230776777, 272736191, 428585443, 1615437439, 1909153337, 3000098101, 21000686707]

約数ペア:

[(1, 21000686707), (7, 3000098101), (11, 1909153337), (13, 1615437439), (49, 428585443), (77, 272736191), (91, 230776777), (143, 146857949), (539, 38962313), (637, 32968111), (1001, 20979707), (7007, 2997101)]