256315131

素因数分解:

$3^3\times {\mathrm{43}}^1\times {\mathrm{220771}}^1$

素因数の和:220823

約数の個数: 16

約数和(自身を含む): 388558720

約数和(自身を除く): 132243589

約数列:

[1, 3, 9, 27, 43, 129, 387, 1161, 220771, 662313, 1986939, 5960817, 9493153, 28479459, 85438377, 256315131]

約数ペア:

[(1, 256315131), (3, 85438377), (9, 28479459), (27, 9493153), (43, 5960817), (129, 1986939), (387, 662313), (1161, 220771)]