21356579881

素因数分解:

$7^2\times {\mathrm{13}}^1\times {\mathrm{29}}^1\times {\mathrm{1156097}}^1$

素因数の和:1156153

約数の個数: 24

約数和(自身を含む): 27676986120

約数和(自身を除く): 6320406239

約数列:

[1, 7, 13, 29, 49, 91, 203, 377, 637, 1421, 2639, 18473, 1156097, 8092679, 15029261, 33526813, 56648753, 105204827, 234687691, 435848569, 736433789, 1642813837, 3050939983, 21356579881]

約数ペア:

[(1, 21356579881), (7, 3050939983), (13, 1642813837), (29, 736433789), (49, 435848569), (91, 234687691), (203, 105204827), (377, 56648753), (637, 33526813), (1421, 15029261), (2639, 8092679), (18473, 1156097)]