9901780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{661}}^1$

素因数の和:784

約数の個数: 48

約数和(自身を含む): 24022656

約数和(自身を除く): 14120876

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 661, 749, 1070, 1322, 1498, 2140, 2644, 2996, 3305, 3745, 4627, 6610, 7490, 9254, 13220, 14980, 18508, 23135, 46270, 70727, 92540, 141454, 282908, 353635, 495089, 707270, 990178, 1414540, 1980356, 2475445, 4950890, 9901780]

約数ペア:

[(1, 9901780), (2, 4950890), (4, 2475445), (5, 1980356), (7, 1414540), (10, 990178), (14, 707270), (20, 495089), (28, 353635), (35, 282908), (70, 141454), (107, 92540), (140, 70727), (214, 46270), (428, 23135), (535, 18508), (661, 14980), (749, 13220), (1070, 9254), (1322, 7490), (1498, 6610), (2140, 4627), (2644, 3745), (2996, 3305)]