20306139

素因数分解:

$3^1\times 7^2\times {\mathrm{107}}^1\times {\mathrm{1291}}^1$

素因数の和:1415

約数の個数: 24

約数和(自身を含む): 31814208

約数和(自身を除く): 11508069

約数列:

[1, 3, 7, 21, 49, 107, 147, 321, 749, 1291, 2247, 3873, 5243, 9037, 15729, 27111, 63259, 138137, 189777, 414411, 966959, 2900877, 6768713, 20306139]

約数ペア:

[(1, 20306139), (3, 6768713), (7, 2900877), (21, 966959), (49, 414411), (107, 189777), (147, 138137), (321, 63259), (749, 27111), (1291, 15729), (2247, 9037), (3873, 5243)]