1278603220

素因数分解:

$2^2\times 5^1\times {\mathrm{4111}}^1\times {\mathrm{15551}}^1$

素因数の和:19671

約数の個数: 24

約数和(自身を含む): 2685892608

約数和(自身を除く): 1407289388

約数列:

[1, 2, 4, 5, 10, 20, 4111, 8222, 15551, 16444, 20555, 31102, 41110, 62204, 77755, 82220, 155510, 311020, 63930161, 127860322, 255720644, 319650805, 639301610, 1278603220]

約数ペア:

[(1, 1278603220), (2, 639301610), (4, 319650805), (5, 255720644), (10, 127860322), (20, 63930161), (4111, 311020), (8222, 155510), (15551, 82220), (16444, 77755), (20555, 62204), (31102, 41110)]