19420479

素因数分解:

$3^4\times {\mathrm{13}}^1\times {\mathrm{18443}}^1$

素因数の和:18468

約数の個数: 20

約数和(自身を含む): 31244136

約数和(自身を除く): 11823657

約数列:

[1, 3, 9, 13, 27, 39, 81, 117, 351, 1053, 18443, 55329, 165987, 239759, 497961, 719277, 1493883, 2157831, 6473493, 19420479]

約数ペア:

[(1, 19420479), (3, 6473493), (9, 2157831), (13, 1493883), (27, 719277), (39, 497961), (81, 239759), (117, 165987), (351, 55329), (1053, 18443)]