18087867

素因数分解:

$3^4\times 7^1\times {\mathrm{19}}^1\times {\mathrm{23}}^1\times {\mathrm{73}}^1$

素因数の和:134

約数の個数: 80

約数和(自身を含む): 34383360

約数和(自身を除く): 16295493

約数列:

[1, 3, 7, 9, 19, 21, 23, 27, 57, 63, 69, 73, 81, 133, 161, 171, 189, 207, 219, 399, 437, 483, 511, 513, 567, 621, 657, 1197, 1311, 1387, 1449, 1533, 1539, 1679, 1863, 1971, 3059, 3591, 3933, 4161, 4347, 4599, 5037, 5913, 9177, 9709, 10773, 11753, 11799, 12483, 13041, 13797, 15111, 27531, 29127, 31901, 35259, 35397, 37449, 41391, 45333, 82593, 87381, 95703, 105777, 112347, 135999, 223307, 247779, 262143, 287109, 317331, 669921, 786429, 861327, 951993, 2009763, 2583981, 6029289, 18087867]

約数ペア:

[(1, 18087867), (3, 6029289), (7, 2583981), (9, 2009763), (19, 951993), (21, 861327), (23, 786429), (27, 669921), (57, 317331), (63, 287109), (69, 262143), (73, 247779), (81, 223307), (133, 135999), (161, 112347), (171, 105777), (189, 95703), (207, 87381), (219, 82593), (399, 45333), (437, 41391), (483, 37449), (511, 35397), (513, 35259), (567, 31901), (621, 29127), (657, 27531), (1197, 15111), (1311, 13797), (1387, 13041), (1449, 12483), (1533, 11799), (1539, 11753), (1679, 10773), (1863, 9709), (1971, 9177), (3059, 5913), (3591, 5037), (3933, 4599), (4161, 4347)]