20477121

素因数分解:

$3^1\times 7^1\times {\mathrm{103}}^1\times {\mathrm{9467}}^1$

素因数の和:9580

約数の個数: 16

約数和(自身を含む): 31509504

約数和(自身を除く): 11032383

約数列:

[1, 3, 7, 21, 103, 309, 721, 2163, 9467, 28401, 66269, 198807, 975101, 2925303, 6825707, 20477121]

約数ペア:

[(1, 20477121), (3, 6825707), (7, 2925303), (21, 975101), (103, 198807), (309, 66269), (721, 28401), (2163, 9467)]