81886749

素因数分解:

$3^1\times 7^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{53}}^1\times {\mathrm{59}}^1$

素因数の和:194

約数の個数: 64

約数和(自身を含む): 136857600

約数和(自身を除く): 54970851

約数列:

[1, 3, 7, 21, 29, 43, 53, 59, 87, 129, 159, 177, 203, 301, 371, 413, 609, 903, 1113, 1239, 1247, 1537, 1711, 2279, 2537, 3127, 3741, 4611, 5133, 6837, 7611, 8729, 9381, 10759, 11977, 15953, 17759, 21889, 26187, 32277, 35931, 47859, 53277, 65667, 66091, 73573, 90683, 134461, 198273, 220719, 272049, 403383, 462637, 515011, 634781, 941227, 1387911, 1545033, 1904343, 2823681, 3899369, 11698107, 27295583, 81886749]

約数ペア:

[(1, 81886749), (3, 27295583), (7, 11698107), (21, 3899369), (29, 2823681), (43, 1904343), (53, 1545033), (59, 1387911), (87, 941227), (129, 634781), (159, 515011), (177, 462637), (203, 403383), (301, 272049), (371, 220719), (413, 198273), (609, 134461), (903, 90683), (1113, 73573), (1239, 66091), (1247, 65667), (1537, 53277), (1711, 47859), (2279, 35931), (2537, 32277), (3127, 26187), (3741, 21889), (4611, 17759), (5133, 15953), (6837, 11977), (7611, 10759), (8729, 9381)]