20213255

素因数分解:

$5^1\times {\mathrm{17}}^1\times {\mathrm{397}}^1\times {\mathrm{599}}^1$

素因数の和:1018

約数の個数: 16

約数和(自身を含む): 25790400

約数和(自身を除く): 5577145

約数列:

[1, 5, 17, 85, 397, 599, 1985, 2995, 6749, 10183, 33745, 50915, 237803, 1189015, 4042651, 20213255]

約数ペア:

[(1, 20213255), (5, 4042651), (17, 1189015), (85, 237803), (397, 50915), (599, 33745), (1985, 10183), (2995, 6749)]