205254567

素因数分解:

$3^5\times 7^1\times {\mathrm{67}}^1\times {\mathrm{1801}}^1$

素因数の和:1890

約数の個数: 48

約数和(自身を含む): 356824832

約数和(自身を除く): 151570265

約数列:

[1, 3, 7, 9, 21, 27, 63, 67, 81, 189, 201, 243, 469, 567, 603, 1407, 1701, 1801, 1809, 4221, 5403, 5427, 12607, 12663, 16209, 16281, 37821, 37989, 48627, 113463, 113967, 120667, 145881, 340389, 362001, 437643, 844669, 1021167, 1086003, 2534007, 3063501, 3258009, 7602021, 9774027, 22806063, 29322081, 68418189, 205254567]

約数ペア:

[(1, 205254567), (3, 68418189), (7, 29322081), (9, 22806063), (21, 9774027), (27, 7602021), (63, 3258009), (67, 3063501), (81, 2534007), (189, 1086003), (201, 1021167), (243, 844669), (469, 437643), (567, 362001), (603, 340389), (1407, 145881), (1701, 120667), (1801, 113967), (1809, 113463), (4221, 48627), (5403, 37989), (5427, 37821), (12607, 16281), (12663, 16209)]