261281007

素因数分解:

$3^2\times {\mathrm{13}}^1\times {\mathrm{17}}^1\times {\mathrm{131363}}^1$

素因数の和:131399

約数の個数: 24

約数和(自身を含む): 430348464

約数和(自身を除く): 169067457

約数列:

[1, 3, 9, 13, 17, 39, 51, 117, 153, 221, 663, 1989, 131363, 394089, 1182267, 1707719, 2233171, 5123157, 6699513, 15369471, 20098539, 29031223, 87093669, 261281007]

約数ペア:

[(1, 261281007), (3, 87093669), (9, 29031223), (13, 20098539), (17, 15369471), (39, 6699513), (51, 5123157), (117, 2233171), (153, 1707719), (221, 1182267), (663, 394089), (1989, 131363)]