20209239

素因数分解:

$3^2\times {\mathrm{61}}^1\times {\mathrm{131}}^1\times {\mathrm{281}}^1$

素因数の和:479

約数の個数: 24

約数和(自身を含む): 30002544

約数和(自身を除く): 9793305

約数列:

[1, 3, 9, 61, 131, 183, 281, 393, 549, 843, 1179, 2529, 7991, 17141, 23973, 36811, 51423, 71919, 110433, 154269, 331299, 2245471, 6736413, 20209239]

約数ペア:

[(1, 20209239), (3, 6736413), (9, 2245471), (61, 331299), (131, 154269), (183, 110433), (281, 71919), (393, 51423), (549, 36811), (843, 23973), (1179, 17141), (2529, 7991)]