18731187

素因数分解:

$3^2\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{1669}}^1$

素因数の和:1747

約数の個数: 24

約数和(自身を含む): 28657200

約数和(自身を除く): 9926013

約数列:

[1, 3, 9, 29, 43, 87, 129, 261, 387, 1247, 1669, 3741, 5007, 11223, 15021, 48401, 71767, 145203, 215301, 435609, 645903, 2081243, 6243729, 18731187]

約数ペア:

[(1, 18731187), (3, 6243729), (9, 2081243), (29, 645903), (43, 435609), (87, 215301), (129, 145203), (261, 71767), (387, 48401), (1247, 15021), (1669, 11223), (3741, 5007)]