20804121

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{859}}^1$

素因数の和:907

約数の個数: 40

約数和(自身を含む): 34964160

約数和(自身を除く): 14160039

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 299, 351, 621, 859, 897, 1053, 1863, 2577, 2691, 7731, 8073, 11167, 19757, 23193, 24219, 33501, 59271, 69579, 100503, 177813, 256841, 301509, 533439, 770523, 904527, 1600317, 2311569, 6934707, 20804121]

約数ペア:

[(1, 20804121), (3, 6934707), (9, 2311569), (13, 1600317), (23, 904527), (27, 770523), (39, 533439), (69, 301509), (81, 256841), (117, 177813), (207, 100503), (299, 69579), (351, 59271), (621, 33501), (859, 24219), (897, 23193), (1053, 19757), (1863, 11167), (2577, 8073), (2691, 7731)]