21139077

素因数分解:

$3^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{149}}^1$

素因数の和:321

約数の個数: 24

約数和(自身を含む): 30175200

約数和(自身を除く): 9036123

約数列:

[1, 3, 19, 57, 131, 149, 361, 393, 447, 1083, 2489, 2831, 7467, 8493, 19519, 47291, 53789, 58557, 141873, 161367, 370861, 1112583, 7046359, 21139077]

約数ペア:

[(1, 21139077), (3, 7046359), (19, 1112583), (57, 370861), (131, 161367), (149, 141873), (361, 58557), (393, 53789), (447, 47291), (1083, 19519), (2489, 8493), (2831, 7467)]