20619145

素因数分解:

$5^1\times {\mathrm{29}}^1\times {\mathrm{43}}^1\times {\mathrm{3307}}^1$

素因数の和:3384

約数の個数: 16

約数和(自身を含む): 26199360

約数和(自身を除く): 5580215

約数列:

[1, 5, 29, 43, 145, 215, 1247, 3307, 6235, 16535, 95903, 142201, 479515, 711005, 4123829, 20619145]

約数ペア:

[(1, 20619145), (5, 4123829), (29, 711005), (43, 479515), (145, 142201), (215, 95903), (1247, 16535), (3307, 6235)]