20829501

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{43}}^1\times {\mathrm{233}}^1$

素因数の和:303

約数の個数: 64

約数和(自身を含む): 39536640

約数和(自身を除く): 18707139

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 43, 63, 77, 99, 129, 189, 231, 233, 297, 301, 387, 473, 693, 699, 903, 1161, 1419, 1631, 2079, 2097, 2563, 2709, 3311, 4257, 4893, 6291, 7689, 8127, 9933, 10019, 12771, 14679, 17941, 23067, 29799, 30057, 44037, 53823, 69201, 70133, 89397, 90171, 110209, 161469, 210399, 270513, 330627, 484407, 631197, 771463, 991881, 1893591, 2314389, 2975643, 6943167, 20829501]

約数ペア:

[(1, 20829501), (3, 6943167), (7, 2975643), (9, 2314389), (11, 1893591), (21, 991881), (27, 771463), (33, 631197), (43, 484407), (63, 330627), (77, 270513), (99, 210399), (129, 161469), (189, 110209), (231, 90171), (233, 89397), (297, 70133), (301, 69201), (387, 53823), (473, 44037), (693, 30057), (699, 29799), (903, 23067), (1161, 17941), (1419, 14679), (1631, 12771), (2079, 10019), (2097, 9933), (2563, 8127), (2709, 7689), (3311, 6291), (4257, 4893)]