20994095

素因数分解:

$5^1\times {\mathrm{53}}^1\times {\mathrm{227}}^1\times {\mathrm{349}}^1$

素因数の和:634

約数の個数: 16

約数和(自身を含む): 25855200

約数和(自身を除く): 4861105

約数列:

[1, 5, 53, 227, 265, 349, 1135, 1745, 12031, 18497, 60155, 79223, 92485, 396115, 4198819, 20994095]

約数ペア:

[(1, 20994095), (5, 4198819), (53, 396115), (227, 92485), (265, 79223), (349, 60155), (1135, 18497), (1745, 12031)]