278987247

素因数分解:

$3^4\times 7^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{1091}}^1$

素因数の和:1162

約数の個数: 80

約数和(自身を含む): 532756224

約数和(自身を除く): 253768977

約数列:

[1, 3, 7, 9, 11, 21, 27, 33, 41, 63, 77, 81, 99, 123, 189, 231, 287, 297, 369, 451, 567, 693, 861, 891, 1091, 1107, 1353, 2079, 2583, 3157, 3273, 3321, 4059, 6237, 7637, 7749, 9471, 9819, 12001, 12177, 22911, 23247, 28413, 29457, 36003, 36531, 44731, 68733, 84007, 85239, 88371, 108009, 134193, 206199, 252021, 255717, 313117, 324027, 402579, 492041, 618597, 756063, 939351, 972081, 1207737, 1476123, 2268189, 2818053, 3444287, 3623211, 4428369, 6804567, 8454159, 10332861, 13285107, 25362477, 30998583, 39855321, 92995749, 278987247]

約数ペア:

[(1, 278987247), (3, 92995749), (7, 39855321), (9, 30998583), (11, 25362477), (21, 13285107), (27, 10332861), (33, 8454159), (41, 6804567), (63, 4428369), (77, 3623211), (81, 3444287), (99, 2818053), (123, 2268189), (189, 1476123), (231, 1207737), (287, 972081), (297, 939351), (369, 756063), (451, 618597), (567, 492041), (693, 402579), (861, 324027), (891, 313117), (1091, 255717), (1107, 252021), (1353, 206199), (2079, 134193), (2583, 108009), (3157, 88371), (3273, 85239), (3321, 84007), (4059, 68733), (6237, 44731), (7637, 36531), (7749, 36003), (9471, 29457), (9819, 28413), (12001, 23247), (12177, 22911)]