21688254

素因数分解:

$2^1\times 3^2\times 7^1\times {\mathrm{43}}^1\times {\mathrm{4003}}^1$

素因数の和:4061

約数の個数: 48

約数和(自身を含む): 54966912

約数和(自身を除く): 33278658

約数列:

[1, 2, 3, 6, 7, 9, 14, 18, 21, 42, 43, 63, 86, 126, 129, 258, 301, 387, 602, 774, 903, 1806, 2709, 4003, 5418, 8006, 12009, 24018, 28021, 36027, 56042, 72054, 84063, 168126, 172129, 252189, 344258, 504378, 516387, 1032774, 1204903, 1549161, 2409806, 3098322, 3614709, 7229418, 10844127, 21688254]

約数ペア:

[(1, 21688254), (2, 10844127), (3, 7229418), (6, 3614709), (7, 3098322), (9, 2409806), (14, 1549161), (18, 1204903), (21, 1032774), (42, 516387), (43, 504378), (63, 344258), (86, 252189), (126, 172129), (129, 168126), (258, 84063), (301, 72054), (387, 56042), (602, 36027), (774, 28021), (903, 24018), (1806, 12009), (2709, 8006), (4003, 5418)]