20520661

素因数分解:

$7^3\times {\mathrm{29}}^1\times {\mathrm{2063}}^1$

素因数の和:2113

約数の個数: 16

約数和(自身を含む): 24768000

約数和(自身を除く): 4247339

約数列:

[1, 7, 29, 49, 203, 343, 1421, 2063, 9947, 14441, 59827, 101087, 418789, 707609, 2931523, 20520661]

約数ペア:

[(1, 20520661), (7, 2931523), (29, 707609), (49, 418789), (203, 101087), (343, 59827), (1421, 14441), (2063, 9947)]