20719937

素因数分解:

$7^1\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{3623}}^1$

素因数の和:3692

約数の個数: 16

約数和(自身を含む): 25512960

約数和(自身を除く): 4793023

約数列:

[1, 7, 19, 43, 133, 301, 817, 3623, 5719, 25361, 68837, 155789, 481859, 1090523, 2959991, 20719937]

約数ペア:

[(1, 20719937), (7, 2959991), (19, 1090523), (43, 481859), (133, 155789), (301, 68837), (817, 25361), (3623, 5719)]