21182931

素因数分解:

$3^3\times 7^1\times {\mathrm{11}}^1\times {\mathrm{23}}^1\times {\mathrm{443}}^1$

素因数の和:493

約数の個数: 64

約数和(自身を含む): 40919040

約数和(自身を除く): 19736109

約数列:

[1, 3, 7, 9, 11, 21, 23, 27, 33, 63, 69, 77, 99, 161, 189, 207, 231, 253, 297, 443, 483, 621, 693, 759, 1329, 1449, 1771, 2079, 2277, 3101, 3987, 4347, 4873, 5313, 6831, 9303, 10189, 11961, 14619, 15939, 27909, 30567, 34111, 43857, 47817, 71323, 83727, 91701, 102333, 112079, 131571, 213969, 275103, 306999, 336237, 641907, 784553, 920997, 1008711, 1925721, 2353659, 3026133, 7060977, 21182931]

約数ペア:

[(1, 21182931), (3, 7060977), (7, 3026133), (9, 2353659), (11, 1925721), (21, 1008711), (23, 920997), (27, 784553), (33, 641907), (63, 336237), (69, 306999), (77, 275103), (99, 213969), (161, 131571), (189, 112079), (207, 102333), (231, 91701), (253, 83727), (297, 71323), (443, 47817), (483, 43857), (621, 34111), (693, 30567), (759, 27909), (1329, 15939), (1449, 14619), (1771, 11961), (2079, 10189), (2277, 9303), (3101, 6831), (3987, 5313), (4347, 4873)]