19996782

素因数分解:

$2^1\times 3^1\times {\mathrm{13}}^1\times {\mathrm{256369}}^1$

素因数の和:256387

約数の個数: 16

約数和(自身を含む): 43070160

約数和(自身を除く): 23073378

約数列:

[1, 2, 3, 6, 13, 26, 39, 78, 256369, 512738, 769107, 1538214, 3332797, 6665594, 9998391, 19996782]

約数ペア:

[(1, 19996782), (2, 9998391), (3, 6665594), (6, 3332797), (13, 1538214), (26, 769107), (39, 512738), (78, 256369)]