18278874

素因数分解:

$2^1\times 3^2\times {\mathrm{19}}^2\times {\mathrm{29}}^1\times {\mathrm{97}}^1$

素因数の和:172

約数の個数: 72

約数和(自身を含む): 43685460

約数和(自身を除く): 25406586

約数列:

[1, 2, 3, 6, 9, 18, 19, 29, 38, 57, 58, 87, 97, 114, 171, 174, 194, 261, 291, 342, 361, 522, 551, 582, 722, 873, 1083, 1102, 1653, 1746, 1843, 2166, 2813, 3249, 3306, 3686, 4959, 5529, 5626, 6498, 8439, 9918, 10469, 11058, 16587, 16878, 20938, 25317, 31407, 33174, 35017, 50634, 53447, 62814, 70034, 94221, 105051, 106894, 160341, 188442, 210102, 315153, 320682, 481023, 630306, 962046, 1015493, 2030986, 3046479, 6092958, 9139437, 18278874]

約数ペア:

[(1, 18278874), (2, 9139437), (3, 6092958), (6, 3046479), (9, 2030986), (18, 1015493), (19, 962046), (29, 630306), (38, 481023), (57, 320682), (58, 315153), (87, 210102), (97, 188442), (114, 160341), (171, 106894), (174, 105051), (194, 94221), (261, 70034), (291, 62814), (342, 53447), (361, 50634), (522, 35017), (551, 33174), (582, 31407), (722, 25317), (873, 20938), (1083, 16878), (1102, 16587), (1653, 11058), (1746, 10469), (1843, 9918), (2166, 8439), (2813, 6498), (3249, 5626), (3306, 5529), (3686, 4959)]