168394640

素因数分解:

$2^4\times 5^1\times {\mathrm{2104933}}^1$

素因数の和:2104946

約数の個数: 20

約数和(自身を含む): 391517724

約数和(自身を除く): 223123084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2104933, 4209866, 8419732, 10524665, 16839464, 21049330, 33678928, 42098660, 84197320, 168394640]

約数ペア:

[(1, 168394640), (2, 84197320), (4, 42098660), (5, 33678928), (8, 21049330), (10, 16839464), (16, 10524665), (20, 8419732), (40, 4209866), (80, 2104933)]