20018919

素因数分解:

$3^1\times {\mathrm{61}}^1\times {\mathrm{139}}^1\times {\mathrm{787}}^1$

素因数の和:990

約数の個数: 16

約数和(自身を含む): 27359360

約数和(自身を除く): 7340441

約数列:

[1, 3, 61, 139, 183, 417, 787, 2361, 8479, 25437, 48007, 109393, 144021, 328179, 6672973, 20018919]

約数ペア:

[(1, 20018919), (3, 6672973), (61, 328179), (139, 144021), (183, 109393), (417, 48007), (787, 25437), (2361, 8479)]