20918931

素因数分解:

$3^1\times {\mathrm{11}}^1\times {\mathrm{163}}^1\times {\mathrm{3889}}^1$

素因数の和:4066

約数の個数: 16

約数和(自身を含む): 30622080

約数和(自身を除く): 9703149

約数列:

[1, 3, 11, 33, 163, 489, 1793, 3889, 5379, 11667, 42779, 128337, 633907, 1901721, 6972977, 20918931]

約数ペア:

[(1, 20918931), (3, 6972977), (11, 1901721), (33, 633907), (163, 128337), (489, 42779), (1793, 11667), (3889, 5379)]