18990895

素因数分解:

$5^1\times 7^1\times {\mathrm{11}}^1\times {\mathrm{107}}^1\times {\mathrm{461}}^1$

素因数の和:591

約数の個数: 32

約数和(自身を含む): 28740096

約数和(自身を除く): 9749201

約数列:

[1, 5, 7, 11, 35, 55, 77, 107, 385, 461, 535, 749, 1177, 2305, 3227, 3745, 5071, 5885, 8239, 16135, 25355, 35497, 41195, 49327, 177485, 246635, 345289, 542597, 1726445, 2712985, 3798179, 18990895]

約数ペア:

[(1, 18990895), (5, 3798179), (7, 2712985), (11, 1726445), (35, 542597), (55, 345289), (77, 246635), (107, 177485), (385, 49327), (461, 41195), (535, 35497), (749, 25355), (1177, 16135), (2305, 8239), (3227, 5885), (3745, 5071)]