21394478

素因数分解:

$2^1\times 7^2\times {\mathrm{43}}^1\times {\mathrm{5077}}^1$

素因数の和:5136

約数の個数: 24

約数和(自身を含む): 38206872

約数和(自身を除く): 16812394

約数列:

[1, 2, 7, 14, 43, 49, 86, 98, 301, 602, 2107, 4214, 5077, 10154, 35539, 71078, 218311, 248773, 436622, 497546, 1528177, 3056354, 10697239, 21394478]

約数ペア:

[(1, 21394478), (2, 10697239), (7, 3056354), (14, 1528177), (43, 497546), (49, 436622), (86, 248773), (98, 218311), (301, 71078), (602, 35539), (2107, 10154), (4214, 5077)]