20171587891

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{107}}^1\times {\mathrm{295949}}^1$

素因数の和:296083

約数の個数: 24

約数和(自身を含む): 25506154800

約数和(自身を除く): 5334566909

約数列:

[1, 7, 13, 49, 91, 107, 637, 749, 1391, 5243, 9737, 68159, 295949, 2071643, 3847337, 14501501, 26931359, 31666543, 188519513, 221665801, 411665059, 1551660607, 2881655413, 20171587891]

約数ペア:

[(1, 20171587891), (7, 2881655413), (13, 1551660607), (49, 411665059), (91, 221665801), (107, 188519513), (637, 31666543), (749, 26931359), (1391, 14501501), (5243, 3847337), (9737, 2071643), (68159, 295949)]