21678837

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{163}}^1\times {\mathrm{1031}}^1$

素因数の和:1240

約数の個数: 16

約数和(自身を含む): 29787648

約数和(自身を除く): 8108811

約数列:

[1, 3, 43, 129, 163, 489, 1031, 3093, 7009, 21027, 44333, 132999, 168053, 504159, 7226279, 21678837]

約数ペア:

[(1, 21678837), (3, 7226279), (43, 504159), (129, 168053), (163, 132999), (489, 44333), (1031, 21027), (3093, 7009)]