20898889445

素因数分解:

$5^1\times 7^1\times {\mathrm{61}}^1\times {\mathrm{2111}}^1\times {\mathrm{4637}}^1$

素因数の和:6821

約数の個数: 32

約数和(自身を含む): 29151277056

約数和(自身を除く): 8252387611

約数列:

[1, 5, 7, 35, 61, 305, 427, 2111, 2135, 4637, 10555, 14777, 23185, 32459, 73885, 128771, 162295, 282857, 643855, 901397, 1414285, 1979999, 4506985, 9788707, 9899995, 48943535, 68520949, 342604745, 597111127, 2985555635, 4179777889, 20898889445]

約数ペア:

[(1, 20898889445), (5, 4179777889), (7, 2985555635), (35, 597111127), (61, 342604745), (305, 68520949), (427, 48943535), (2111, 9899995), (2135, 9788707), (4637, 4506985), (10555, 1979999), (14777, 1414285), (23185, 901397), (32459, 643855), (73885, 282857), (128771, 162295)]