19897256980

素因数分解:

$2^2\times 5^1\times {\mathrm{4909}}^1\times {\mathrm{202661}}^1$

素因数の和:207579

約数の個数: 24

約数和(自身を含む): 41792957640

約数和(自身を除く): 21895700660

約数列:

[1, 2, 4, 5, 10, 20, 4909, 9818, 19636, 24545, 49090, 98180, 202661, 405322, 810644, 1013305, 2026610, 4053220, 994862849, 1989725698, 3979451396, 4974314245, 9948628490, 19897256980]

約数ペア:

[(1, 19897256980), (2, 9948628490), (4, 4974314245), (5, 3979451396), (10, 1989725698), (20, 994862849), (4909, 4053220), (9818, 2026610), (19636, 1013305), (24545, 810644), (49090, 405322), (98180, 202661)]