20319741

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{23}}^1\times {\mathrm{839}}^1$

素因数の和:887

約数の個数: 40

約数和(自身を含む): 34151040

約数和(自身を除く): 13831299

約数列:

[1, 3, 9, 13, 23, 27, 39, 69, 81, 117, 207, 299, 351, 621, 839, 897, 1053, 1863, 2517, 2691, 7551, 8073, 10907, 19297, 22653, 24219, 32721, 57891, 67959, 98163, 173673, 250861, 294489, 521019, 752583, 883467, 1563057, 2257749, 6773247, 20319741]

約数ペア:

[(1, 20319741), (3, 6773247), (9, 2257749), (13, 1563057), (23, 883467), (27, 752583), (39, 521019), (69, 294489), (81, 250861), (117, 173673), (207, 98163), (299, 67959), (351, 57891), (621, 32721), (839, 24219), (897, 22653), (1053, 19297), (1863, 10907), (2517, 8073), (2691, 7551)]