2021625520

素因数分解:

$2^4\times 5^1\times {\mathrm{25270319}}^1$

素因数の和:25270332

約数の個数: 20

約数和(自身を含む): 4700279520

約数和(自身を除く): 2678654000

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 25270319, 50540638, 101081276, 126351595, 202162552, 252703190, 404325104, 505406380, 1010812760, 2021625520]

約数ペア:

[(1, 2021625520), (2, 1010812760), (4, 505406380), (5, 404325104), (8, 252703190), (10, 202162552), (16, 126351595), (20, 101081276), (40, 50540638), (80, 25270319)]