19807281

素因数分解:

$3^3\times {\mathrm{13}}^1\times {\mathrm{56431}}^1$

素因数の和:56453

約数の個数: 16

約数和(自身を含む): 31601920

約数和(自身を除く): 11794639

約数列:

[1, 3, 9, 13, 27, 39, 117, 351, 56431, 169293, 507879, 733603, 1523637, 2200809, 6602427, 19807281]

約数ペア:

[(1, 19807281), (3, 6602427), (9, 2200809), (13, 1523637), (27, 733603), (39, 507879), (117, 169293), (351, 56431)]