20778933

素因数分解:

$3^1\times 7^1\times {\mathrm{43}}^1\times {\mathrm{23011}}^1$

素因数の和:23064

約数の個数: 16

約数和(自身を含む): 32400896

約数和(自身を除く): 11621963

約数列:

[1, 3, 7, 21, 43, 129, 301, 903, 23011, 69033, 161077, 483231, 989473, 2968419, 6926311, 20778933]

約数ペア:

[(1, 20778933), (3, 6926311), (7, 2968419), (21, 989473), (43, 483231), (129, 161077), (301, 69033), (903, 23011)]