19909540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{142211}}^1$

素因数の和:142227

約数の個数: 24

約数和(自身を含む): 47783232

約数和(自身を除く): 27873692

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 142211, 284422, 568844, 711055, 995477, 1422110, 1990954, 2844220, 3981908, 4977385, 9954770, 19909540]

約数ペア:

[(1, 19909540), (2, 9954770), (4, 4977385), (5, 3981908), (7, 2844220), (10, 1990954), (14, 1422110), (20, 995477), (28, 711055), (35, 568844), (70, 284422), (140, 142211)]