20968389

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{19913}}^1$

素因数の和:19938

約数の個数: 20

約数和(自身を含む): 33734316

約数和(自身を除く): 12765927

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 19913, 59739, 179217, 258869, 537651, 776607, 1612953, 2329821, 6989463, 20968389]

約数ペア:

[(1, 20968389), (3, 6989463), (9, 2329821), (13, 1612953), (27, 776607), (39, 537651), (81, 258869), (117, 179217), (351, 59739), (1053, 19913)]