217371519

素因数分解:

$3^5\times {\mathrm{811}}^1\times {\mathrm{1103}}^1$

素因数の和:1929

約数の個数: 24

約数和(自身を含む): 326307072

約数和(自身を除く): 108935553

約数列:

[1, 3, 9, 27, 81, 243, 811, 1103, 2433, 3309, 7299, 9927, 21897, 29781, 65691, 89343, 197073, 268029, 894533, 2683599, 8050797, 24152391, 72457173, 217371519]

約数ペア:

[(1, 217371519), (3, 72457173), (9, 24152391), (27, 8050797), (81, 2683599), (243, 894533), (811, 268029), (1103, 197073), (2433, 89343), (3309, 65691), (7299, 29781), (9927, 21897)]