19969755

素因数分解:

$3^1\times 5^1\times {\mathrm{13}}^1\times {\mathrm{102409}}^1$

素因数の和:102430

約数の個数: 16

約数和(自身を含む): 34409760

約数和(自身を除く): 14440005

約数列:

[1, 3, 5, 13, 15, 39, 65, 195, 102409, 307227, 512045, 1331317, 1536135, 3993951, 6656585, 19969755]

約数ペア:

[(1, 19969755), (3, 6656585), (5, 3993951), (13, 1536135), (15, 1331317), (39, 512045), (65, 307227), (195, 102409)]