19803560

素因数分解:

$2^3\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{661}}^1$

素因数の和:786

約数の個数: 64

約数和(自身を含む): 51477120

約数和(自身を除く): 31673560

約数列:

[1, 2, 4, 5, 7, 8, 10, 14, 20, 28, 35, 40, 56, 70, 107, 140, 214, 280, 428, 535, 661, 749, 856, 1070, 1322, 1498, 2140, 2644, 2996, 3305, 3745, 4280, 4627, 5288, 5992, 6610, 7490, 9254, 13220, 14980, 18508, 23135, 26440, 29960, 37016, 46270, 70727, 92540, 141454, 185080, 282908, 353635, 495089, 565816, 707270, 990178, 1414540, 1980356, 2475445, 2829080, 3960712, 4950890, 9901780, 19803560]

約数ペア:

[(1, 19803560), (2, 9901780), (4, 4950890), (5, 3960712), (7, 2829080), (8, 2475445), (10, 1980356), (14, 1414540), (20, 990178), (28, 707270), (35, 565816), (40, 495089), (56, 353635), (70, 282908), (107, 185080), (140, 141454), (214, 92540), (280, 70727), (428, 46270), (535, 37016), (661, 29960), (749, 26440), (856, 23135), (1070, 18508), (1322, 14980), (1498, 13220), (2140, 9254), (2644, 7490), (2996, 6610), (3305, 5992), (3745, 5288), (4280, 4627)]