21145496

素因数分解:

$2^3\times {\mathrm{131}}^1\times {\mathrm{20177}}^1$

素因数の和:20314

約数の個数: 16

約数和(自身を含む): 39952440

約数和(自身を除く): 18806944

約数列:

[1, 2, 4, 8, 131, 262, 524, 1048, 20177, 40354, 80708, 161416, 2643187, 5286374, 10572748, 21145496]

約数ペア:

[(1, 21145496), (2, 10572748), (4, 5286374), (8, 2643187), (131, 161416), (262, 80708), (524, 40354), (1048, 20177)]