19748781

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{9929}}^1$

素因数の和:9965

約数の個数: 24

約数和(自身を含む): 32530680

約数和(自身を除く): 12781899

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 9929, 29787, 89361, 129077, 168793, 387231, 506379, 1161693, 1519137, 2194309, 6582927, 19748781]

約数ペア:

[(1, 19748781), (3, 6582927), (9, 2194309), (13, 1519137), (17, 1161693), (39, 506379), (51, 387231), (117, 168793), (153, 129077), (221, 89361), (663, 29787), (1989, 9929)]