408524440

素因数分解:

$2^3\times 5^1\times {\mathrm{661}}^1\times {\mathrm{15451}}^1$

素因数の和:16123

約数の個数: 32

約数和(自身を含む): 920630160

約数和(自身を除く): 512105720

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 661, 1322, 2644, 3305, 5288, 6610, 13220, 15451, 26440, 30902, 61804, 77255, 123608, 154510, 309020, 618040, 10213111, 20426222, 40852444, 51065555, 81704888, 102131110, 204262220, 408524440]

約数ペア:

[(1, 408524440), (2, 204262220), (4, 102131110), (5, 81704888), (8, 51065555), (10, 40852444), (20, 20426222), (40, 10213111), (661, 618040), (1322, 309020), (2644, 154510), (3305, 123608), (5288, 77255), (6610, 61804), (13220, 30902), (15451, 26440)]