21789003

素因数分解:

$3^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{2521}}^1$

素因数の和:2634

約数の個数: 16

約数和(自身を含む): 30183296

約数和(自身を除く): 8394293

約数列:

[1, 3, 43, 67, 129, 201, 2521, 2881, 7563, 8643, 108403, 168907, 325209, 506721, 7263001, 21789003]

約数ペア:

[(1, 21789003), (3, 7263001), (43, 506721), (67, 325209), (129, 168907), (201, 108403), (2521, 8643), (2881, 7563)]