18765549

素因数分解:

$3^2\times {\mathrm{11}}^1\times {\mathrm{37}}^1\times {\mathrm{47}}^1\times {\mathrm{109}}^1$

素因数の和:210

約数の個数: 48

約数和(自身を含む): 31299840

約数和(自身を除く): 12534291

約数列:

[1, 3, 9, 11, 33, 37, 47, 99, 109, 111, 141, 327, 333, 407, 423, 517, 981, 1199, 1221, 1551, 1739, 3597, 3663, 4033, 4653, 5123, 5217, 10791, 12099, 15369, 15651, 19129, 36297, 44363, 46107, 56353, 57387, 133089, 169059, 172161, 189551, 399267, 507177, 568653, 1705959, 2085061, 6255183, 18765549]

約数ペア:

[(1, 18765549), (3, 6255183), (9, 2085061), (11, 1705959), (33, 568653), (37, 507177), (47, 399267), (99, 189551), (109, 172161), (111, 169059), (141, 133089), (327, 57387), (333, 56353), (407, 46107), (423, 44363), (517, 36297), (981, 19129), (1199, 15651), (1221, 15369), (1551, 12099), (1739, 10791), (3597, 5217), (3663, 5123), (4033, 4653)]