81707740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{95009}}^1$

素因数の和:95061

約数の個数: 24

約数和(自身を含む): 175578480

約数和(自身を除く): 93870740

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 95009, 190018, 380036, 475045, 950090, 1900180, 4085387, 8170774, 16341548, 20426935, 40853870, 81707740]

約数ペア:

[(1, 81707740), (2, 40853870), (4, 20426935), (5, 16341548), (10, 8170774), (20, 4085387), (43, 1900180), (86, 950090), (172, 475045), (215, 380036), (430, 190018), (860, 95009)]