20989881

素因数分解:

$3^3\times {\mathrm{11}}^1\times {\mathrm{29}}^1\times {\mathrm{2437}}^1$

素因数の和:2486

約数の個数: 32

約数和(自身を含む): 35107200

約数和(自身を除く): 14117319

約数列:

[1, 3, 9, 11, 27, 29, 33, 87, 99, 261, 297, 319, 783, 957, 2437, 2871, 7311, 8613, 21933, 26807, 65799, 70673, 80421, 212019, 241263, 636057, 723789, 777403, 1908171, 2332209, 6996627, 20989881]

約数ペア:

[(1, 20989881), (3, 6996627), (9, 2332209), (11, 1908171), (27, 777403), (29, 723789), (33, 636057), (87, 241263), (99, 212019), (261, 80421), (297, 70673), (319, 65799), (783, 26807), (957, 21933), (2437, 8613), (2871, 7311)]