19754523

素因数分解:

$3^4\times {\mathrm{47}}^1\times {\mathrm{5189}}^1$

素因数の和:5248

約数の個数: 20

約数和(自身を含む): 30143520

約数和(自身を除く): 10388997

約数列:

[1, 3, 9, 27, 47, 81, 141, 423, 1269, 3807, 5189, 15567, 46701, 140103, 243883, 420309, 731649, 2194947, 6584841, 19754523]

約数ペア:

[(1, 19754523), (3, 6584841), (9, 2194947), (27, 731649), (47, 420309), (81, 243883), (141, 140103), (423, 46701), (1269, 15567), (3807, 5189)]