81995403

素因数分解:

$3^1\times 7^1\times {\mathrm{17}}^1\times {\mathrm{31}}^2\times {\mathrm{239}}^1$

素因数の和:328

約数の個数: 48

約数和(自身を含む): 137272320

約数和(自身を除く): 55276917

約数列:

[1, 3, 7, 17, 21, 31, 51, 93, 119, 217, 239, 357, 527, 651, 717, 961, 1581, 1673, 2883, 3689, 4063, 5019, 6727, 7409, 11067, 12189, 16337, 20181, 22227, 28441, 49011, 51863, 85323, 114359, 125953, 155589, 229679, 343077, 377859, 689037, 881671, 1607753, 2645013, 3904543, 4823259, 11713629, 27331801, 81995403]

約数ペア:

[(1, 81995403), (3, 27331801), (7, 11713629), (17, 4823259), (21, 3904543), (31, 2645013), (51, 1607753), (93, 881671), (119, 689037), (217, 377859), (239, 343077), (357, 229679), (527, 155589), (651, 125953), (717, 114359), (961, 85323), (1581, 51863), (1673, 49011), (2883, 28441), (3689, 22227), (4063, 20181), (5019, 16337), (6727, 12189), (7409, 11067)]