21351824

素因数分解:

$2^4\times {\mathrm{13}}^1\times {\mathrm{102653}}^1$

素因数の和:102674

約数の個数: 20

約数和(自身を含む): 44551836

約数和(自身を除く): 23200012

約数列:

[1, 2, 4, 8, 13, 16, 26, 52, 104, 208, 102653, 205306, 410612, 821224, 1334489, 1642448, 2668978, 5337956, 10675912, 21351824]

約数ペア:

[(1, 21351824), (2, 10675912), (4, 5337956), (8, 2668978), (13, 1642448), (16, 1334489), (26, 821224), (52, 410612), (104, 205306), (208, 102653)]