20287127

素因数分解:

$7^2\times {\mathrm{23}}^1\times {\mathrm{47}}^1\times {\mathrm{383}}^1$

素因数の和:467

約数の個数: 24

約数和(自身を含む): 25214976

約数和(自身を除く): 4927849

約数列:

[1, 7, 23, 47, 49, 161, 329, 383, 1081, 1127, 2303, 2681, 7567, 8809, 18001, 18767, 52969, 61663, 126007, 414023, 431641, 882049, 2898161, 20287127]

約数ペア:

[(1, 20287127), (7, 2898161), (23, 882049), (47, 431641), (49, 414023), (161, 126007), (329, 61663), (383, 52969), (1081, 18767), (1127, 18001), (2303, 8809), (2681, 7567)]