128668840

素因数分解:

$2^3\times 5^1\times {\mathrm{937}}^1\times {\mathrm{3433}}^1$

素因数の和:4381

約数の個数: 32

約数和(自身を含む): 289898280

約数和(自身を除く): 161229440

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 937, 1874, 3433, 3748, 4685, 6866, 7496, 9370, 13732, 17165, 18740, 27464, 34330, 37480, 68660, 137320, 3216721, 6433442, 12866884, 16083605, 25733768, 32167210, 64334420, 128668840]

約数ペア:

[(1, 128668840), (2, 64334420), (4, 32167210), (5, 25733768), (8, 16083605), (10, 12866884), (20, 6433442), (40, 3216721), (937, 137320), (1874, 68660), (3433, 37480), (3748, 34330), (4685, 27464), (6866, 18740), (7496, 17165), (9370, 13732)]