389634640

素因数分解:

$2^4\times 5^1\times {\mathrm{4870433}}^1$

素因数の和:4870446

約数の個数: 20

約数和(自身を含む): 905900724

約数和(自身を除く): 516266084

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 4870433, 9740866, 19481732, 24352165, 38963464, 48704330, 77926928, 97408660, 194817320, 389634640]

約数ペア:

[(1, 389634640), (2, 194817320), (4, 97408660), (5, 77926928), (8, 48704330), (10, 38963464), (16, 24352165), (20, 19481732), (40, 9740866), (80, 4870433)]