21090268

素因数分解:

$2^2\times {\mathrm{17}}^1\times {\mathrm{193}}^1\times {\mathrm{1607}}^1$

素因数の和:1821

約数の個数: 24

約数和(自身を含む): 39305952

約数和(自身を除く): 18215684

約数列:

[1, 2, 4, 17, 34, 68, 193, 386, 772, 1607, 3214, 3281, 6428, 6562, 13124, 27319, 54638, 109276, 310151, 620302, 1240604, 5272567, 10545134, 21090268]

約数ペア:

[(1, 21090268), (2, 10545134), (4, 5272567), (17, 1240604), (34, 620302), (68, 310151), (193, 109276), (386, 54638), (772, 27319), (1607, 13124), (3214, 6562), (3281, 6428)]