20101023

素因数分解:

$3^2\times {\mathrm{71}}^1\times {\mathrm{83}}^1\times {\mathrm{379}}^1$

素因数の和:539

約数の個数: 24

約数和(自身を含む): 29877120

約数和(自身を除く): 9776097

約数列:

[1, 3, 9, 71, 83, 213, 249, 379, 639, 747, 1137, 3411, 5893, 17679, 26909, 31457, 53037, 80727, 94371, 242181, 283113, 2233447, 6700341, 20101023]

約数ペア:

[(1, 20101023), (3, 6700341), (9, 2233447), (71, 283113), (83, 242181), (213, 94371), (249, 80727), (379, 53037), (639, 31457), (747, 26909), (1137, 17679), (3411, 5893)]