21191523

素因数分解:

$3^1\times {\mathrm{89}}^1\times {\mathrm{139}}^1\times {\mathrm{571}}^1$

素因数の和:802

約数の個数: 16

約数和(自身を含む): 28828800

約数和(自身を除く): 7637277

約数列:

[1, 3, 89, 139, 267, 417, 571, 1713, 12371, 37113, 50819, 79369, 152457, 238107, 7063841, 21191523]

約数ペア:

[(1, 21191523), (3, 7063841), (89, 238107), (139, 152457), (267, 79369), (417, 50819), (571, 37113), (1713, 12371)]