21457807085

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{422689}}^1$

素因数の和:422789

約数の個数: 32

約数和(自身を含む): 30677149440

約数和(自身を除く): 9219342355

約数列:

[1, 5, 11, 13, 55, 65, 71, 143, 355, 715, 781, 923, 3905, 4615, 10153, 50765, 422689, 2113445, 4649579, 5494957, 23247895, 27474785, 30010919, 60444527, 150054595, 302222635, 330120109, 390141947, 1650600545, 1950709735, 4291561417, 21457807085]

約数ペア:

[(1, 21457807085), (5, 4291561417), (11, 1950709735), (13, 1650600545), (55, 390141947), (65, 330120109), (71, 302222635), (143, 150054595), (355, 60444527), (715, 30010919), (781, 27474785), (923, 23247895), (3905, 5494957), (4615, 4649579), (10153, 2113445), (50765, 422689)]