20008821

素因数分解:

$3^1\times 7^1\times {\mathrm{853}}^1\times {\mathrm{1117}}^1$

素因数の和:1980

約数の個数: 16

約数和(自身を含む): 30552704

約数和(自身を除く): 10543883

約数列:

[1, 3, 7, 21, 853, 1117, 2559, 3351, 5971, 7819, 17913, 23457, 952801, 2858403, 6669607, 20008821]

約数ペア:

[(1, 20008821), (3, 6669607), (7, 2858403), (21, 952801), (853, 23457), (1117, 17913), (2559, 7819), (3351, 5971)]