20381478

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{261301}}^1$

素因数の和:261319

約数の個数: 16

約数和(自身を含む): 43898736

約数和(自身を除く): 23517258

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 261301, 522602, 783903, 1567806, 3396913, 6793826, 10190739, 20381478]

約数ペア:

[(1, 20381478), (2, 10190739), (3, 6793826), (6, 3396913), (13, 1567806), (26, 783903), (39, 522602), (78, 261301)]