20561121

素因数分解:

$3^4\times 7^1\times {\mathrm{36263}}^1$

素因数の和:36282

約数の個数: 20

約数和(自身を含む): 35103552

約数和(自身を除く): 14542431

約数列:

[1, 3, 7, 9, 21, 27, 63, 81, 189, 567, 36263, 108789, 253841, 326367, 761523, 979101, 2284569, 2937303, 6853707, 20561121]

約数ペア:

[(1, 20561121), (3, 6853707), (7, 2937303), (9, 2284569), (21, 979101), (27, 761523), (63, 326367), (81, 253841), (189, 108789), (567, 36263)]