81686864

素因数分解:

$2^4\times 7^1\times {\mathrm{193}}^1\times {\mathrm{3779}}^1$

素因数の和:3987

約数の個数: 40

約数和(自身を含む): 181863360

約数和(自身を除く): 100176496

約数列:

[1, 2, 4, 7, 8, 14, 16, 28, 56, 112, 193, 386, 772, 1351, 1544, 2702, 3088, 3779, 5404, 7558, 10808, 15116, 21616, 26453, 30232, 52906, 60464, 105812, 211624, 423248, 729347, 1458694, 2917388, 5105429, 5834776, 10210858, 11669552, 20421716, 40843432, 81686864]

約数ペア:

[(1, 81686864), (2, 40843432), (4, 20421716), (7, 11669552), (8, 10210858), (14, 5834776), (16, 5105429), (28, 2917388), (56, 1458694), (112, 729347), (193, 423248), (386, 211624), (772, 105812), (1351, 60464), (1544, 52906), (2702, 30232), (3088, 26453), (3779, 21616), (5404, 15116), (7558, 10808)]