1281520

素因数分解:

$2^4\times 5^1\times {\mathrm{83}}^1\times {\mathrm{193}}^1$

素因数の和:289

約数の個数: 40

約数和(自身を含む): 3031056

約数和(自身を除く): 1749536

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 83, 166, 193, 332, 386, 415, 664, 772, 830, 965, 1328, 1544, 1660, 1930, 3088, 3320, 3860, 6640, 7720, 15440, 16019, 32038, 64076, 80095, 128152, 160190, 256304, 320380, 640760, 1281520]

約数ペア:

[(1, 1281520), (2, 640760), (4, 320380), (5, 256304), (8, 160190), (10, 128152), (16, 80095), (20, 64076), (40, 32038), (80, 16019), (83, 15440), (166, 7720), (193, 6640), (332, 3860), (386, 3320), (415, 3088), (664, 1930), (772, 1660), (830, 1544), (965, 1328)]