20685161

素因数分解:

$7^1\times {\mathrm{61}}^1\times {\mathrm{193}}^1\times {\mathrm{251}}^1$

素因数の和:512

約数の個数: 16

約数和(自身を含む): 24248448

約数和(自身を除く): 3563287

約数列:

[1, 7, 61, 193, 251, 427, 1351, 1757, 11773, 15311, 48443, 82411, 107177, 339101, 2955023, 20685161]

約数ペア:

[(1, 20685161), (7, 2955023), (61, 339101), (193, 107177), (251, 82411), (427, 48443), (1351, 15311), (1757, 11773)]