20420379

素因数分解:

$3^2\times 7^1\times {\mathrm{29}}^1\times {\mathrm{11177}}^1$

素因数の和:11219

約数の個数: 24

約数和(自身を含む): 34875360

約数和(自身を除く): 14454981

約数列:

[1, 3, 7, 9, 21, 29, 63, 87, 203, 261, 609, 1827, 11177, 33531, 78239, 100593, 234717, 324133, 704151, 972399, 2268931, 2917197, 6806793, 20420379]

約数ペア:

[(1, 20420379), (3, 6806793), (7, 2917197), (9, 2268931), (21, 972399), (29, 704151), (63, 324133), (87, 234717), (203, 100593), (261, 78239), (609, 33531), (1827, 11177)]