20815487

素因数分解:

$7^1\times {\mathrm{11}}^1\times {\mathrm{83}}^1\times {\mathrm{3257}}^1$

素因数の和:3358

約数の個数: 16

約数和(自身を含む): 26272512

約数和(自身を除く): 5457025

約数列:

[1, 7, 11, 77, 83, 581, 913, 3257, 6391, 22799, 35827, 250789, 270331, 1892317, 2973641, 20815487]

約数ペア:

[(1, 20815487), (7, 2973641), (11, 1892317), (77, 270331), (83, 250789), (581, 35827), (913, 22799), (3257, 6391)]