257130369

素因数分解:

$3^4\times {\mathrm{1031}}^1\times {\mathrm{3079}}^1$

素因数の和:4122

約数の個数: 20

約数和(自身を含む): 384605760

約数和(自身を除く): 127475391

約数列:

[1, 3, 9, 27, 81, 1031, 3079, 3093, 9237, 9279, 27711, 27837, 83133, 83511, 249399, 3174449, 9523347, 28570041, 85710123, 257130369]

約数ペア:

[(1, 257130369), (3, 85710123), (9, 28570041), (27, 9523347), (81, 3174449), (1031, 249399), (3079, 83511), (3093, 83133), (9237, 27837), (9279, 27711)]