19578860

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{107}}^1\times {\mathrm{1307}}^1$

素因数の和:1430

約数の個数: 48

約数和(自身を含む): 47464704

約数和(自身を除く): 27885844

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 107, 140, 214, 428, 535, 749, 1070, 1307, 1498, 2140, 2614, 2996, 3745, 5228, 6535, 7490, 9149, 13070, 14980, 18298, 26140, 36596, 45745, 91490, 139849, 182980, 279698, 559396, 699245, 978943, 1398490, 1957886, 2796980, 3915772, 4894715, 9789430, 19578860]

約数ペア:

[(1, 19578860), (2, 9789430), (4, 4894715), (5, 3915772), (7, 2796980), (10, 1957886), (14, 1398490), (20, 978943), (28, 699245), (35, 559396), (70, 279698), (107, 182980), (140, 139849), (214, 91490), (428, 45745), (535, 36596), (749, 26140), (1070, 18298), (1307, 14980), (1498, 13070), (2140, 9149), (2614, 7490), (2996, 6535), (3745, 5228)]