128216439

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{121763}}^1$

素因数の和:121788

約数の個数: 20

約数和(自身を含む): 206268216

約数和(自身を除く): 78051777

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 121763, 365289, 1095867, 1582919, 3287601, 4748757, 9862803, 14246271, 42738813, 128216439]

約数ペア:

[(1, 128216439), (3, 42738813), (9, 14246271), (13, 9862803), (27, 4748757), (39, 3287601), (81, 1582919), (117, 1095867), (351, 365289), (1053, 121763)]