21376467

素因数分解:

$3^6\times 7^1\times {\mathrm{59}}^1\times {\mathrm{71}}^1$

素因数の和:155

約数の個数: 56

約数和(自身を含む): 37774080

約数和(自身を除く): 16397613

約数列:

[1, 3, 7, 9, 21, 27, 59, 63, 71, 81, 177, 189, 213, 243, 413, 497, 531, 567, 639, 729, 1239, 1491, 1593, 1701, 1917, 3717, 4189, 4473, 4779, 5103, 5751, 11151, 12567, 13419, 14337, 17253, 29323, 33453, 37701, 40257, 43011, 51759, 87969, 100359, 113103, 120771, 263907, 301077, 339309, 362313, 791721, 1017927, 2375163, 3053781, 7125489, 21376467]

約数ペア:

[(1, 21376467), (3, 7125489), (7, 3053781), (9, 2375163), (21, 1017927), (27, 791721), (59, 362313), (63, 339309), (71, 301077), (81, 263907), (177, 120771), (189, 113103), (213, 100359), (243, 87969), (413, 51759), (497, 43011), (531, 40257), (567, 37701), (639, 33453), (729, 29323), (1239, 17253), (1491, 14337), (1593, 13419), (1701, 12567), (1917, 11151), (3717, 5751), (4189, 5103), (4473, 4779)]