81769168

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{393121}}^1$

素因数の和:393142

約数の個数: 20

約数和(自身を含む): 170614948

約数和(自身を除く): 88845780

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 393121, 786242, 1572484, 3144968, 5110573, 6289936, 10221146, 20442292, 40884584, 81769168]

約数ペア:

[(1, 81769168), (2, 40884584), (4, 20442292), (8, 10221146), (13, 6289936), (16, 5110573), (26, 3144968), (52, 1572484), (104, 786242), (208, 393121)]