138709168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{666871}}^1$

素因数の和:666892

約数の個数: 20

約数和(自身を含む): 289422448

約数和(自身を除く): 150713280

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 666871, 1333742, 2667484, 5334968, 8669323, 10669936, 17338646, 34677292, 69354584, 138709168]

約数ペア:

[(1, 138709168), (2, 69354584), (4, 34677292), (8, 17338646), (13, 10669936), (16, 8669323), (26, 5334968), (52, 2667484), (104, 1333742), (208, 666871)]