21031085

素因数分解:

$5^1\times {\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{4253}}^1$

素因数の和:4324

約数の個数: 16

約数和(自身を含む): 26953344

約数和(自身を除く): 5922259

約数列:

[1, 5, 23, 43, 115, 215, 989, 4253, 4945, 21265, 97819, 182879, 489095, 914395, 4206217, 21031085]

約数ペア:

[(1, 21031085), (5, 4206217), (23, 914395), (43, 489095), (115, 182879), (215, 97819), (989, 21265), (4253, 4945)]