19888804

素因数分解:

$2^2\times {\mathrm{13}}^1\times {\mathrm{71}}^1\times {\mathrm{5387}}^1$

素因数の和:5475

約数の個数: 24

約数和(自身を含む): 38017728

約数和(自身を除く): 18128924

約数列:

[1, 2, 4, 13, 26, 52, 71, 142, 284, 923, 1846, 3692, 5387, 10774, 21548, 70031, 140062, 280124, 382477, 764954, 1529908, 4972201, 9944402, 19888804]

約数ペア:

[(1, 19888804), (2, 9944402), (4, 4972201), (13, 1529908), (26, 764954), (52, 382477), (71, 280124), (142, 140062), (284, 70031), (923, 21548), (1846, 10774), (3692, 5387)]