78561

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1$

素因数の和:85

約数の個数: 24

約数和(自身を含む): 137280

約数和(自身を除く): 58719

約数列:

[1, 3, 7, 9, 21, 29, 43, 63, 87, 129, 203, 261, 301, 387, 609, 903, 1247, 1827, 2709, 3741, 8729, 11223, 26187, 78561]

約数ペア:

[(1, 78561), (3, 26187), (7, 11223), (9, 8729), (21, 3741), (29, 2709), (43, 1827), (63, 1247), (87, 903), (129, 609), (203, 387), (261, 301)]