54421780

素因数分解:

$2^2\times 5^1\times 7^1\times {\mathrm{388727}}^1$

素因数の和:388743

約数の個数: 24

約数和(自身を含む): 130612608

約数和(自身を除く): 76190828

約数列:

[1, 2, 4, 5, 7, 10, 14, 20, 28, 35, 70, 140, 388727, 777454, 1554908, 1943635, 2721089, 3887270, 5442178, 7774540, 10884356, 13605445, 27210890, 54421780]

約数ペア:

[(1, 54421780), (2, 27210890), (4, 13605445), (5, 10884356), (7, 7774540), (10, 5442178), (14, 3887270), (20, 2721089), (28, 1943635), (35, 1554908), (70, 777454), (140, 388727)]