19906415440

素因数分解:

$2^4\times 5^1\times {\mathrm{248830193}}^1$

素因数の和:248830206

約数の個数: 20

約数和(自身を含む): 46282416084

約数和(自身を除く): 26376000644

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 248830193, 497660386, 995320772, 1244150965, 1990641544, 2488301930, 3981283088, 4976603860, 9953207720, 19906415440]

約数ペア:

[(1, 19906415440), (2, 9953207720), (4, 4976603860), (5, 3981283088), (8, 2488301930), (10, 1990641544), (16, 1244150965), (20, 995320772), (40, 497660386), (80, 248830193)]