21689931

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{277}}^1\times {\mathrm{607}}^1$

素因数の和:930

約数の個数: 16

約数和(自身を含む): 29748224

約数和(自身を除く): 8058293

約数列:

[1, 3, 43, 129, 277, 607, 831, 1821, 11911, 26101, 35733, 78303, 168139, 504417, 7229977, 21689931]

約数ペア:

[(1, 21689931), (3, 7229977), (43, 504417), (129, 168139), (277, 78303), (607, 35733), (831, 26101), (1821, 11911)]