21072051

素因数分解:

$3^2\times 7^1\times {\mathrm{11}}^1\times {\mathrm{13}}^1\times {\mathrm{2339}}^1$

素因数の和:2376

約数の個数: 48

約数和(自身を含む): 40884480

約数和(自身を除く): 19812429

約数列:

[1, 3, 7, 9, 11, 13, 21, 33, 39, 63, 77, 91, 99, 117, 143, 231, 273, 429, 693, 819, 1001, 1287, 2339, 3003, 7017, 9009, 16373, 21051, 25729, 30407, 49119, 77187, 91221, 147357, 180103, 212849, 231561, 273663, 334477, 540309, 638547, 1003431, 1620927, 1915641, 2341339, 3010293, 7024017, 21072051]

約数ペア:

[(1, 21072051), (3, 7024017), (7, 3010293), (9, 2341339), (11, 1915641), (13, 1620927), (21, 1003431), (33, 638547), (39, 540309), (63, 334477), (77, 273663), (91, 231561), (99, 212849), (117, 180103), (143, 147357), (231, 91221), (273, 77187), (429, 49119), (693, 30407), (819, 25729), (1001, 21051), (1287, 16373), (2339, 9009), (3003, 7017)]