258957

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{139}}^1$

素因数の和:174

約数の個数: 20

約数和(自身を含む): 406560

約数和(自身を除く): 147603

約数列:

[1, 3, 9, 23, 27, 69, 81, 139, 207, 417, 621, 1251, 1863, 3197, 3753, 9591, 11259, 28773, 86319, 258957]

約数ペア:

[(1, 258957), (3, 86319), (9, 28773), (23, 11259), (27, 9591), (69, 3753), (81, 3197), (139, 1863), (207, 1251), (417, 621)]