21677461

素因数分解:

${\mathrm{13}}^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{157}}^1$

素因数の和:245

約数の個数: 24

約数和(自身を含む): 25444320

約数和(自身を除く): 3766859

約数列:

[1, 13, 19, 43, 157, 169, 247, 559, 817, 2041, 2983, 3211, 6751, 7267, 10621, 26533, 38779, 87763, 128269, 138073, 504127, 1140919, 1667497, 21677461]

約数ペア:

[(1, 21677461), (13, 1667497), (19, 1140919), (43, 504127), (157, 138073), (169, 128269), (247, 87763), (559, 38779), (817, 26533), (2041, 10621), (2983, 7267), (3211, 6751)]