20256561

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19237}}^1$

素因数の和:19262

約数の個数: 20

約数和(自身を含む): 32589172

約数和(自身を除く): 12332611

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19237, 57711, 173133, 250081, 519399, 750243, 1558197, 2250729, 6752187, 20256561]

約数ペア:

[(1, 20256561), (3, 6752187), (9, 2250729), (13, 1558197), (27, 750243), (39, 519399), (81, 250081), (117, 173133), (351, 57711), (1053, 19237)]