20625815

素因数分解:

$5^1\times 7^2\times {\mathrm{29}}^1\times {\mathrm{2903}}^1$

素因数の和:2951

約数の個数: 24

約数和(自身を含む): 29795040

約数和(自身を除く): 9169225

約数列:

[1, 5, 7, 29, 35, 49, 145, 203, 245, 1015, 1421, 2903, 7105, 14515, 20321, 84187, 101605, 142247, 420935, 589309, 711235, 2946545, 4125163, 20625815]

約数ペア:

[(1, 20625815), (5, 4125163), (7, 2946545), (29, 711235), (35, 589309), (49, 420935), (145, 142247), (203, 101605), (245, 84187), (1015, 20321), (1421, 14515), (2903, 7105)]