20995855

素因数分解:

$5^1\times {\mathrm{19}}^1\times {\mathrm{29}}^1\times {\mathrm{7621}}^1$

素因数の和:7674

約数の個数: 16

約数和(自身を含む): 27439200

約数和(自身を除く): 6443345

約数列:

[1, 5, 19, 29, 95, 145, 551, 2755, 7621, 38105, 144799, 221009, 723995, 1105045, 4199171, 20995855]

約数ペア:

[(1, 20995855), (5, 4199171), (19, 1105045), (29, 723995), (95, 221009), (145, 144799), (551, 38105), (2755, 7621)]