20972744

素因数分解:

$2^3\times {\mathrm{13}}^1\times {\mathrm{201661}}^1$

素因数の和:201680

約数の個数: 16

約数和(自身を含む): 42349020

約数和(自身を除く): 21376276

約数列:

[1, 2, 4, 8, 13, 26, 52, 104, 201661, 403322, 806644, 1613288, 2621593, 5243186, 10486372, 20972744]

約数ペア:

[(1, 20972744), (2, 10486372), (4, 5243186), (8, 2621593), (13, 1613288), (26, 806644), (52, 403322), (104, 201661)]