21081279

素因数分解:

$3^1\times {\mathrm{19}}^1\times {\mathrm{163}}^1\times {\mathrm{2269}}^1$

素因数の和:2454

約数の個数: 16

約数和(自身を含む): 29782400

約数和(自身を除く): 8701121

約数列:

[1, 3, 19, 57, 163, 489, 2269, 3097, 6807, 9291, 43111, 129333, 369847, 1109541, 7027093, 21081279]

約数ペア:

[(1, 21081279), (3, 7027093), (19, 1109541), (57, 369847), (163, 129333), (489, 43111), (2269, 9291), (3097, 6807)]