20136991

素因数分解:

$7^2\times {\mathrm{29}}^1\times {\mathrm{37}}^1\times {\mathrm{383}}^1$

素因数の和:463

約数の個数: 24

約数和(自身を含む): 24952320

約数和(自身を除く): 4815329

約数列:

[1, 7, 29, 37, 49, 203, 259, 383, 1073, 1421, 1813, 2681, 7511, 11107, 14171, 18767, 52577, 77749, 99197, 410959, 544243, 694379, 2876713, 20136991]

約数ペア:

[(1, 20136991), (7, 2876713), (29, 694379), (37, 544243), (49, 410959), (203, 99197), (259, 77749), (383, 52577), (1073, 18767), (1421, 14171), (1813, 11107), (2681, 7511)]