21025081

素因数分解:

$7^1\times {\mathrm{11}}^2\times {\mathrm{103}}^1\times {\mathrm{241}}^1$

素因数の和:373

約数の個数: 24

約数和(自身を含む): 26778752

約数和(自身を除く): 5753671

約数列:

[1, 7, 11, 77, 103, 121, 241, 721, 847, 1133, 1687, 2651, 7931, 12463, 18557, 24823, 29161, 87241, 173761, 204127, 273053, 1911371, 3003583, 21025081]

約数ペア:

[(1, 21025081), (7, 3003583), (11, 1911371), (77, 273053), (103, 204127), (121, 173761), (241, 87241), (721, 29161), (847, 24823), (1133, 18557), (1687, 12463), (2651, 7931)]