19811540

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{141511}}^1$

素因数の和:141527

約数の個数: 24

約数和(自身を含む): 47548032

約数和(自身を除く): 27736492

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 141511, 283022, 566044, 707555, 990577, 1415110, 1981154, 2830220, 3962308, 4952885, 9905770, 19811540]

約数ペア:

[(1, 19811540), (2, 9905770), (4, 4952885), (5, 3962308), (7, 2830220), (10, 1981154), (14, 1415110), (20, 990577), (28, 707555), (35, 566044), (70, 283022), (140, 141511)]