20961310

素因数分解:

$2^1\times 5^1\times {\mathrm{131}}^1\times {\mathrm{16001}}^1$

素因数の和:16139

約数の個数: 16

約数和(自身を含む): 38020752

約数和(自身を除く): 17059442

約数列:

[1, 2, 5, 10, 131, 262, 655, 1310, 16001, 32002, 80005, 160010, 2096131, 4192262, 10480655, 20961310]

約数ペア:

[(1, 20961310), (2, 10480655), (5, 4192262), (10, 2096131), (131, 160010), (262, 80005), (655, 32002), (1310, 16001)]