18812493

素因数分解:

$3^4\times 7^1\times {\mathrm{33179}}^1$

素因数の和:33198

約数の個数: 20

約数和(自身を含む): 32118240

約数和(自身を除く): 13305747

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 33179, 99537, 232253, 298611, 696759, 895833, 2090277, 2687499, 6270831, 18812493]

約数ペア:

[(1, 18812493), (3, 6270831), (7, 2687499), (9, 2090277), (21, 895833), (27, 696759), (63, 298611), (81, 232253), (189, 99537), (567, 33179)]