405484780

素因数分解:

$2^2\times 5^1\times {\mathrm{3259}}^1\times {\mathrm{6221}}^1$

素因数の和:9489

約数の個数: 24

約数和(自身を含む): 851916240

約数和(自身を除く): 446431460

約数列:

[1, 2, 4, 5, 10, 20, 3259, 6221, 6518, 12442, 13036, 16295, 24884, 31105, 32590, 62210, 65180, 124420, 20274239, 40548478, 81096956, 101371195, 202742390, 405484780]

約数ペア:

[(1, 405484780), (2, 202742390), (4, 101371195), (5, 81096956), (10, 40548478), (20, 20274239), (3259, 124420), (6221, 65180), (6518, 62210), (12442, 32590), (13036, 31105), (16295, 24884)]