638978045

素因数分解:

$5^1\times {\mathrm{31}}^1\times {\mathrm{131}}^1\times {\mathrm{31469}}^1$

素因数の和:31636

約数の個数: 16

約数和(自身を含む): 797575680

約数和(自身を除く): 158597635

約数列:

[1, 5, 31, 131, 155, 655, 4061, 20305, 31469, 157345, 975539, 4122439, 4877695, 20612195, 127795609, 638978045]

約数ペア:

[(1, 638978045), (5, 127795609), (31, 20612195), (131, 4877695), (155, 4122439), (655, 975539), (4061, 157345), (20305, 31469)]