19810947

素因数分解:

$3^1\times {\mathrm{13}}^1\times {\mathrm{37}}^1\times {\mathrm{13729}}^1$

素因数の和:13782

約数の個数: 16

約数和(自身を含む): 29217440

約数和(自身を除く): 9406493

約数列:

[1, 3, 13, 37, 39, 111, 481, 1443, 13729, 41187, 178477, 507973, 535431, 1523919, 6603649, 19810947]

約数ペア:

[(1, 19810947), (3, 6603649), (13, 1523919), (37, 535431), (39, 507973), (111, 178477), (481, 41187), (1443, 13729)]