19937512

素因数分解:

$2^3\times 7^2\times {\mathrm{181}}^1\times {\mathrm{281}}^1$

素因数の和:482

約数の個数: 48

約数和(自身を含む): 43882020

約数和(自身を除く): 23944508

約数列:

[1, 2, 4, 7, 8, 14, 28, 49, 56, 98, 181, 196, 281, 362, 392, 562, 724, 1124, 1267, 1448, 1967, 2248, 2534, 3934, 5068, 7868, 8869, 10136, 13769, 15736, 17738, 27538, 35476, 50861, 55076, 70952, 101722, 110152, 203444, 356027, 406888, 712054, 1424108, 2492189, 2848216, 4984378, 9968756, 19937512]

約数ペア:

[(1, 19937512), (2, 9968756), (4, 4984378), (7, 2848216), (8, 2492189), (14, 1424108), (28, 712054), (49, 406888), (56, 356027), (98, 203444), (181, 110152), (196, 101722), (281, 70952), (362, 55076), (392, 50861), (562, 35476), (724, 27538), (1124, 17738), (1267, 15736), (1448, 13769), (1967, 10136), (2248, 8869), (2534, 7868), (3934, 5068)]