18266787

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{613}}^1$

素因数の和:680

約数の個数: 48

約数和(自身を含む): 33715968

約数和(自身を除く): 15449181

約数列:

[1, 3, 7, 9, 11, 21, 33, 43, 63, 77, 99, 129, 231, 301, 387, 473, 613, 693, 903, 1419, 1839, 2709, 3311, 4257, 4291, 5517, 6743, 9933, 12873, 20229, 26359, 29799, 38619, 47201, 60687, 79077, 141603, 184513, 237231, 289949, 424809, 553539, 869847, 1660617, 2029643, 2609541, 6088929, 18266787]

約数ペア:

[(1, 18266787), (3, 6088929), (7, 2609541), (9, 2029643), (11, 1660617), (21, 869847), (33, 553539), (43, 424809), (63, 289949), (77, 237231), (99, 184513), (129, 141603), (231, 79077), (301, 60687), (387, 47201), (473, 38619), (613, 29799), (693, 26359), (903, 20229), (1419, 12873), (1839, 9933), (2709, 6743), (3311, 5517), (4257, 4291)]