81640209

素因数分解:

$3^1\times 7^1\times {\mathrm{1861}}^1\times {\mathrm{2089}}^1$

素因数の和:3960

約数の個数: 16

約数和(自身を含む): 124530560

約数和(自身を除く): 42890351

約数列:

[1, 3, 7, 21, 1861, 2089, 5583, 6267, 13027, 14623, 39081, 43869, 3887629, 11662887, 27213403, 81640209]

約数ペア:

[(1, 81640209), (3, 27213403), (7, 11662887), (21, 3887629), (1861, 43869), (2089, 39081), (5583, 14623), (6267, 13027)]