20919789

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{443}}^1$

素因数の和:519

約数の個数: 40

約数和(自身を含む): 34813152

約数和(自身を除く): 13893363

約数列:

[1, 3, 9, 11, 27, 33, 53, 81, 99, 159, 297, 443, 477, 583, 891, 1329, 1431, 1749, 3987, 4293, 4873, 5247, 11961, 14619, 15741, 23479, 35883, 43857, 47223, 70437, 131571, 211311, 258269, 394713, 633933, 774807, 1901799, 2324421, 6973263, 20919789]

約数ペア:

[(1, 20919789), (3, 6973263), (9, 2324421), (11, 1901799), (27, 774807), (33, 633933), (53, 394713), (81, 258269), (99, 211311), (159, 131571), (297, 70437), (443, 47223), (477, 43857), (583, 35883), (891, 23479), (1329, 15741), (1431, 14619), (1749, 11961), (3987, 5247), (4293, 4873)]