20121987

素因数分解:

$3^1\times {\mathrm{23}}^1\times {\mathrm{193}}^1\times {\mathrm{1511}}^1$

素因数の和:1730

約数の個数: 16

約数和(自身を含む): 28159488

約数和(自身を除く): 8037501

約数列:

[1, 3, 23, 69, 193, 579, 1511, 4439, 4533, 13317, 34753, 104259, 291623, 874869, 6707329, 20121987]

約数ペア:

[(1, 20121987), (3, 6707329), (23, 874869), (69, 291623), (193, 104259), (579, 34753), (1511, 13317), (4439, 4533)]