72978740

素因数分解:

$2^2\times 5^1\times {\mathrm{43}}^1\times {\mathrm{84859}}^1$

素因数の和:84911

約数の個数: 24

約数和(自身を含む): 156821280

約数和(自身を除く): 83842540

約数列:

[1, 2, 4, 5, 10, 20, 43, 86, 172, 215, 430, 860, 84859, 169718, 339436, 424295, 848590, 1697180, 3648937, 7297874, 14595748, 18244685, 36489370, 72978740]

約数ペア:

[(1, 72978740), (2, 36489370), (4, 18244685), (5, 14595748), (10, 7297874), (20, 3648937), (43, 1697180), (86, 848590), (172, 424295), (215, 339436), (430, 169718), (860, 84859)]