20125721

素因数分解:

$7^2\times {\mathrm{11}}^1\times {\mathrm{37339}}^1$

素因数の和:37364

約数の個数: 12

約数和(自身を含む): 25540560

約数和(自身を除く): 5414839

約数列:

[1, 7, 11, 49, 77, 539, 37339, 261373, 410729, 1829611, 2875103, 20125721]

約数ペア:

[(1, 20125721), (7, 2875103), (11, 1829611), (49, 410729), (77, 261373), (539, 37339)]