21005371

素因数分解:

${\mathrm{23}}^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{317}}^1$

素因数の和:450

約数の個数: 16

約数和(自身を含む): 22834944

約数和(自身を除く): 1829573

約数列:

[1, 23, 43, 67, 317, 989, 1541, 2881, 7291, 13631, 21239, 66263, 313513, 488497, 913277, 21005371]

約数ペア:

[(1, 21005371), (23, 913277), (43, 488497), (67, 313513), (317, 66263), (989, 21239), (1541, 13631), (2881, 7291)]