28000161

素因数分解:

$3^7\times 7^1\times {\mathrm{31}}^1\times {\mathrm{59}}^1$

素因数の和:118

約数の個数: 64

約数和(自身を含む): 50380800

約数和(自身を除く): 22380639

約数列:

[1, 3, 7, 9, 21, 27, 31, 59, 63, 81, 93, 177, 189, 217, 243, 279, 413, 531, 567, 651, 729, 837, 1239, 1593, 1701, 1829, 1953, 2187, 2511, 3717, 4779, 5103, 5487, 5859, 7533, 11151, 12803, 14337, 15309, 16461, 17577, 22599, 33453, 38409, 43011, 49383, 52731, 67797, 100359, 115227, 129033, 148149, 158193, 301077, 345681, 444447, 474579, 903231, 1037043, 1333341, 3111129, 4000023, 9333387, 28000161]

約数ペア:

[(1, 28000161), (3, 9333387), (7, 4000023), (9, 3111129), (21, 1333341), (27, 1037043), (31, 903231), (59, 474579), (63, 444447), (81, 345681), (93, 301077), (177, 158193), (189, 148149), (217, 129033), (243, 115227), (279, 100359), (413, 67797), (531, 52731), (567, 49383), (651, 43011), (729, 38409), (837, 33453), (1239, 22599), (1593, 17577), (1701, 16461), (1829, 15309), (1953, 14337), (2187, 12803), (2511, 11151), (3717, 7533), (4779, 5859), (5103, 5487)]