20953513

素因数分解:

$7^1\times {\mathrm{43}}^1\times {\mathrm{67}}^1\times {\mathrm{1039}}^1$

素因数の和:1156

約数の個数: 16

約数和(自身を含む): 24893440

約数和(自身を除く): 3939927

約数列:

[1, 7, 43, 67, 301, 469, 1039, 2881, 7273, 20167, 44677, 69613, 312739, 487291, 2993359, 20953513]

約数ペア:

[(1, 20953513), (7, 2993359), (43, 487291), (67, 312739), (301, 69613), (469, 44677), (1039, 20167), (2881, 7273)]