80787824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{388403}}^1$

素因数の和:388424

約数の個数: 20

約数和(自身を含む): 168567336

約数和(自身を除く): 87779512

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 388403, 776806, 1553612, 3107224, 5049239, 6214448, 10098478, 20196956, 40393912, 80787824]

約数ペア:

[(1, 80787824), (2, 40393912), (4, 20196956), (8, 10098478), (13, 6214448), (16, 5049239), (26, 3107224), (52, 1553612), (104, 776806), (208, 388403)]