20728107

素因数分解:

$3^2\times {\mathrm{19}}^1\times {\mathrm{43}}^1\times {\mathrm{2819}}^1$

素因数の和:2887

約数の個数: 24

約数和(自身を含む): 32260800

約数和(自身を除く): 11532693

約数列:

[1, 3, 9, 19, 43, 57, 129, 171, 387, 817, 2451, 2819, 7353, 8457, 25371, 53561, 121217, 160683, 363651, 482049, 1090953, 2303123, 6909369, 20728107]

約数ペア:

[(1, 20728107), (3, 6909369), (9, 2303123), (19, 1090953), (43, 482049), (57, 363651), (129, 160683), (171, 121217), (387, 53561), (817, 25371), (2451, 8457), (2819, 7353)]