19996389

素因数分解:

$3^4\times 7^1\times {\mathrm{35267}}^1$

素因数の和:35286

約数の個数: 20

約数和(自身を含む): 34139424

約数和(自身を除く): 14143035

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 35267, 105801, 246869, 317403, 740607, 952209, 2221821, 2856627, 6665463, 19996389]

約数ペア:

[(1, 19996389), (3, 6665463), (7, 2856627), (9, 2221821), (21, 952209), (27, 740607), (63, 317403), (81, 246869), (189, 105801), (567, 35267)]