20781500519

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{1217}}^1\times {\mathrm{77267}}^1$

素因数の和:78514

約数の個数: 16

約数和(自身を含む): 23716330848

約数和(自身を除く): 2934830329

約数列:

[1, 13, 17, 221, 1217, 15821, 20689, 77267, 268957, 1004471, 1313539, 17076007, 94033939, 1222441207, 1598576963, 20781500519]

約数ペア:

[(1, 20781500519), (13, 1598576963), (17, 1222441207), (221, 94033939), (1217, 17076007), (15821, 1313539), (20689, 1004471), (77267, 268957)]