18515091

素因数分解:

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

素因数の和:304

約数の個数: 48

約数和(自身を含む): 31518720

約数和(自身を除く): 13003629

約数列:

[1, 3, 7, 17, 21, 31, 49, 51, 93, 119, 147, 217, 239, 357, 527, 651, 717, 833, 1519, 1581, 1673, 2499, 3689, 4063, 4557, 5019, 7409, 11067, 11711, 12189, 22227, 25823, 28441, 35133, 51863, 77469, 85323, 125953, 155589, 199087, 363041, 377859, 597261, 881671, 1089123, 2645013, 6171697, 18515091]

約数ペア:

[(1, 18515091), (3, 6171697), (7, 2645013), (17, 1089123), (21, 881671), (31, 597261), (49, 377859), (51, 363041), (93, 199087), (119, 155589), (147, 125953), (217, 85323), (239, 77469), (357, 51863), (527, 35133), (651, 28441), (717, 25823), (833, 22227), (1519, 12189), (1581, 11711), (1673, 11067), (2499, 7409), (3689, 5019), (4063, 4557)]