2078490640

素因数分解:

$2^4\times 5^1\times {\mathrm{25981133}}^1$

素因数の和:25981146

約数の個数: 20

約数和(自身を含む): 4832490924

約数和(自身を除く): 2754000284

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25981133, 51962266, 103924532, 129905665, 207849064, 259811330, 415698128, 519622660, 1039245320, 2078490640]

約数ペア:

[(1, 2078490640), (2, 1039245320), (4, 519622660), (5, 415698128), (8, 259811330), (10, 207849064), (16, 129905665), (20, 103924532), (40, 51962266), (80, 25981133)]