20201389

素因数分解:

${\mathrm{13}}^1\times {\mathrm{17}}^2\times {\mathrm{19}}^1\times {\mathrm{283}}^1$

素因数の和:349

約数の個数: 24

約数和(自身を含む): 24412640

約数和(自身を除く): 4211251

約数列:

[1, 13, 17, 19, 221, 247, 283, 289, 323, 3679, 3757, 4199, 4811, 5377, 5491, 62543, 69901, 71383, 81787, 91409, 1063231, 1188317, 1553953, 20201389]

約数ペア:

[(1, 20201389), (13, 1553953), (17, 1188317), (19, 1063231), (221, 91409), (247, 81787), (283, 71383), (289, 69901), (323, 62543), (3679, 5491), (3757, 5377), (4199, 4811)]