28423791

素因数分解:

$3^4\times {\mathrm{11}}^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:138

約数の個数: 80

約数和(自身を含む): 51575040

約数和(自身を除く): 23151249

約数列:

[1, 3, 9, 11, 19, 23, 27, 33, 57, 69, 73, 81, 99, 171, 207, 209, 219, 253, 297, 437, 513, 621, 627, 657, 759, 803, 891, 1311, 1387, 1539, 1679, 1863, 1881, 1971, 2277, 2409, 3933, 4161, 4807, 5037, 5643, 5913, 6831, 7227, 11799, 12483, 14421, 15111, 15257, 16929, 18469, 20493, 21681, 31901, 35397, 37449, 43263, 45333, 45771, 55407, 65043, 95703, 112347, 129789, 135999, 137313, 166221, 287109, 350911, 389367, 411939, 498663, 861327, 1052733, 1235817, 1495989, 2583981, 3158199, 9474597, 28423791]

約数ペア:

[(1, 28423791), (3, 9474597), (9, 3158199), (11, 2583981), (19, 1495989), (23, 1235817), (27, 1052733), (33, 861327), (57, 498663), (69, 411939), (73, 389367), (81, 350911), (99, 287109), (171, 166221), (207, 137313), (209, 135999), (219, 129789), (253, 112347), (297, 95703), (437, 65043), (513, 55407), (621, 45771), (627, 45333), (657, 43263), (759, 37449), (803, 35397), (891, 31901), (1311, 21681), (1387, 20493), (1539, 18469), (1679, 16929), (1863, 15257), (1881, 15111), (1971, 14421), (2277, 12483), (2409, 11799), (3933, 7227), (4161, 6831), (4807, 5913), (5037, 5643)]