8999991

素因数分解:

$3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1$

素因数の和:83

約数の個数: 96

約数和(自身を含む): 18590208

約数和(自身を除く): 9590217

約数列:

[1, 3, 7, 9, 11, 13, 21, 27, 33, 37, 39, 63, 77, 81, 91, 99, 111, 117, 143, 189, 231, 243, 259, 273, 297, 333, 351, 407, 429, 481, 567, 693, 777, 819, 891, 999, 1001, 1053, 1221, 1287, 1443, 1701, 2079, 2331, 2457, 2673, 2849, 2997, 3003, 3159, 3367, 3663, 3861, 4329, 5291, 6237, 6993, 7371, 8547, 8991, 9009, 10101, 10989, 11583, 12987, 15873, 18711, 20979, 22113, 25641, 27027, 30303, 32967, 34749, 37037, 38961, 47619, 62937, 76923, 81081, 90909, 98901, 111111, 116883, 142857, 230769, 243243, 272727, 333333, 428571, 692307, 818181, 999999, 1285713, 2999997, 8999991]

約数ペア:

[(1, 8999991), (3, 2999997), (7, 1285713), (9, 999999), (11, 818181), (13, 692307), (21, 428571), (27, 333333), (33, 272727), (37, 243243), (39, 230769), (63, 142857), (77, 116883), (81, 111111), (91, 98901), (99, 90909), (111, 81081), (117, 76923), (143, 62937), (189, 47619), (231, 38961), (243, 37037), (259, 34749), (273, 32967), (297, 30303), (333, 27027), (351, 25641), (407, 22113), (429, 20979), (481, 18711), (567, 15873), (693, 12987), (777, 11583), (819, 10989), (891, 10101), (999, 9009), (1001, 8991), (1053, 8547), (1221, 7371), (1287, 6993), (1443, 6237), (1701, 5291), (2079, 4329), (2331, 3861), (2457, 3663), (2673, 3367), (2849, 3159), (2997, 3003)]