20850291

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{3343}}^1$

素因数の和:3373

約数の個数: 40

約数和(自身を含む): 38843904

約数和(自身を除く): 17993613

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 297, 567, 693, 891, 2079, 3343, 6237, 10029, 23401, 30087, 36773, 70203, 90261, 110319, 210609, 257411, 270783, 330957, 631827, 772233, 992871, 1895481, 2316699, 2978613, 6950097, 20850291]

約数ペア:

[(1, 20850291), (3, 6950097), (7, 2978613), (9, 2316699), (11, 1895481), (21, 992871), (27, 772233), (33, 631827), (63, 330957), (77, 270783), (81, 257411), (99, 210609), (189, 110319), (231, 90261), (297, 70203), (567, 36773), (693, 30087), (891, 23401), (2079, 10029), (3343, 6237)]