18120753

素因数分解:

$3^6\times 7^1\times {\mathrm{53}}^1\times {\mathrm{67}}^1$

素因数の和:145

約数の個数: 56

約数和(自身を含む): 32107968

約数和(自身を除く): 13987215

約数列:

[1, 3, 7, 9, 21, 27, 53, 63, 67, 81, 159, 189, 201, 243, 371, 469, 477, 567, 603, 729, 1113, 1407, 1431, 1701, 1809, 3339, 3551, 4221, 4293, 5103, 5427, 10017, 10653, 12663, 12879, 16281, 24857, 30051, 31959, 37989, 38637, 48843, 74571, 90153, 95877, 113967, 223713, 270459, 287631, 341901, 671139, 862893, 2013417, 2588679, 6040251, 18120753]

約数ペア:

[(1, 18120753), (3, 6040251), (7, 2588679), (9, 2013417), (21, 862893), (27, 671139), (53, 341901), (63, 287631), (67, 270459), (81, 223713), (159, 113967), (189, 95877), (201, 90153), (243, 74571), (371, 48843), (469, 38637), (477, 37989), (567, 31959), (603, 30051), (729, 24857), (1113, 16281), (1407, 12879), (1431, 12663), (1701, 10653), (1809, 10017), (3339, 5427), (3551, 5103), (4221, 4293)]