19978827

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{53}}^1\times {\mathrm{11423}}^1$

素因数の和:11490

約数の個数: 16

約数和(自身を含む): 29611008

約数和(自身を除く): 9632181

約数列:

[1, 3, 11, 33, 53, 159, 583, 1749, 11423, 34269, 125653, 376959, 605419, 1816257, 6659609, 19978827]

約数ペア:

[(1, 19978827), (3, 6659609), (11, 1816257), (33, 605419), (53, 376959), (159, 125653), (583, 34269), (1749, 11423)]