131421689

素因数分解:

$7^1\times {\mathrm{19}}^2\times {\mathrm{131}}^1\times {\mathrm{397}}^1$

素因数の和:573

約数の個数: 24

約数和(自身を含む): 160129728

約数和(自身を除く): 28708039

約数列:

[1, 7, 19, 131, 133, 361, 397, 917, 2489, 2527, 2779, 7543, 17423, 47291, 52007, 52801, 143317, 331037, 364049, 988133, 1003219, 6916931, 18774527, 131421689]

約数ペア:

[(1, 131421689), (7, 18774527), (19, 6916931), (131, 1003219), (133, 988133), (361, 364049), (397, 331037), (917, 143317), (2489, 52801), (2527, 52007), (2779, 47291), (7543, 17423)]