21124719

素因数分解:

$3^5\times 7^1\times {\mathrm{11}}^1\times {\mathrm{1129}}^1$

素因数の和:1162

約数の個数: 48

約数和(自身を含む): 39486720

約数和(自身を除く): 18362001

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 63, 77, 81, 99, 189, 231, 243, 297, 567, 693, 891, 1129, 1701, 2079, 2673, 3387, 6237, 7903, 10161, 12419, 18711, 23709, 30483, 37257, 71127, 86933, 91449, 111771, 213381, 260799, 274347, 335313, 640143, 782397, 1005939, 1920429, 2347191, 3017817, 7041573, 21124719]

約数ペア:

[(1, 21124719), (3, 7041573), (7, 3017817), (9, 2347191), (11, 1920429), (21, 1005939), (27, 782397), (33, 640143), (63, 335313), (77, 274347), (81, 260799), (99, 213381), (189, 111771), (231, 91449), (243, 86933), (297, 71127), (567, 37257), (693, 30483), (891, 23709), (1129, 18711), (1701, 12419), (2079, 10161), (2673, 7903), (3387, 6237)]