81219260

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{94441}}^1$

素因数の和:94493

約数の個数: 24

約数和(自身を含む): 174528816

約数和(自身を除く): 93309556

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 94441, 188882, 377764, 472205, 944410, 1888820, 4060963, 8121926, 16243852, 20304815, 40609630, 81219260]

約数ペア:

[(1, 81219260), (2, 40609630), (4, 20304815), (5, 16243852), (10, 8121926), (20, 4060963), (43, 1888820), (86, 944410), (172, 472205), (215, 377764), (430, 188882), (860, 94441)]