20505303

素因数分解:

$3^2\times 7^1\times {\mathrm{13}}^1\times {\mathrm{25037}}^1$

素因数の和:25063

約数の個数: 24

約数和(自身を含む): 36455328

約数和(自身を除く): 15950025

約数列:

[1, 3, 7, 9, 13, 21, 39, 63, 91, 117, 273, 819, 25037, 75111, 175259, 225333, 325481, 525777, 976443, 1577331, 2278367, 2929329, 6835101, 20505303]

約数ペア:

[(1, 20505303), (3, 6835101), (7, 2929329), (9, 2278367), (13, 1577331), (21, 976443), (39, 525777), (63, 325481), (91, 225333), (117, 175259), (273, 75111), (819, 25037)]