255231

素因数分解:

$3^4\times {\mathrm{23}}^1\times {\mathrm{137}}^1$

素因数の和:172

約数の個数: 20

約数和(自身を含む): 400752

約数和(自身を除く): 145521

約数列:

[1, 3, 9, 23, 27, 69, 81, 137, 207, 411, 621, 1233, 1863, 3151, 3699, 9453, 11097, 28359, 85077, 255231]

約数ペア:

[(1, 255231), (3, 85077), (9, 28359), (23, 11097), (27, 9453), (69, 3699), (81, 3151), (137, 1863), (207, 1233), (411, 621)]