899910

素因数分解:

$2^1\times 3^4\times 5^1\times {\mathrm{11}}^1\times {\mathrm{101}}^1$

素因数の和:131

約数の個数: 80

約数和(自身を含む): 2665872

約数和(自身を除く): 1765962

約数列:

[1, 2, 3, 5, 6, 9, 10, 11, 15, 18, 22, 27, 30, 33, 45, 54, 55, 66, 81, 90, 99, 101, 110, 135, 162, 165, 198, 202, 270, 297, 303, 330, 405, 495, 505, 594, 606, 810, 891, 909, 990, 1010, 1111, 1485, 1515, 1782, 1818, 2222, 2727, 2970, 3030, 3333, 4455, 4545, 5454, 5555, 6666, 8181, 8910, 9090, 9999, 11110, 13635, 16362, 16665, 19998, 27270, 29997, 33330, 40905, 49995, 59994, 81810, 89991, 99990, 149985, 179982, 299970, 449955, 899910]

約数ペア:

[(1, 899910), (2, 449955), (3, 299970), (5, 179982), (6, 149985), (9, 99990), (10, 89991), (11, 81810), (15, 59994), (18, 49995), (22, 40905), (27, 33330), (30, 29997), (33, 27270), (45, 19998), (54, 16665), (55, 16362), (66, 13635), (81, 11110), (90, 9999), (99, 9090), (101, 8910), (110, 8181), (135, 6666), (162, 5555), (165, 5454), (198, 4545), (202, 4455), (270, 3333), (297, 3030), (303, 2970), (330, 2727), (405, 2222), (495, 1818), (505, 1782), (594, 1515), (606, 1485), (810, 1111), (891, 1010), (909, 990)]