20540395

素因数分解:

$5^1\times {\mathrm{79}}^1\times {\mathrm{149}}^1\times {\mathrm{349}}^1$

素因数の和:582

約数の個数: 16

約数和(自身を含む): 25200000

約数和(自身を除く): 4659605

約数列:

[1, 5, 79, 149, 349, 395, 745, 1745, 11771, 27571, 52001, 58855, 137855, 260005, 4108079, 20540395]

約数ペア:

[(1, 20540395), (5, 4108079), (79, 260005), (149, 137855), (349, 58855), (395, 52001), (745, 27571), (1745, 11771)]