20925821

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3659}}^1$

素因数の和:3728

約数の個数: 16

約数和(自身を含む): 25766400

約数和(自身を除く): 4840579

約数列:

[1, 7, 19, 43, 133, 301, 817, 3659, 5719, 25613, 69521, 157337, 486647, 1101359, 2989403, 20925821]

約数ペア:

[(1, 20925821), (7, 2989403), (19, 1101359), (43, 486647), (133, 157337), (301, 69521), (817, 25613), (3659, 5719)]