20512163390

素因数分解:

$2^1\times 5^1\times {\mathrm{31}}^1\times {\mathrm{66168269}}^1$

素因数の和:66168307

約数の個数: 16

約数和(自身を含む): 38112923520

約数和(自身を除く): 17600760130

約数列:

[1, 2, 5, 10, 31, 62, 155, 310, 66168269, 132336538, 330841345, 661682690, 2051216339, 4102432678, 10256081695, 20512163390]

約数ペア:

[(1, 20512163390), (2, 10256081695), (5, 4102432678), (10, 2051216339), (31, 661682690), (62, 330841345), (155, 132336538), (310, 66168269)]