278360660

素因数分解:

$2^2\times 5^1\times {\mathrm{641}}^1\times {\mathrm{21713}}^1$

素因数の和:22363

約数の個数: 24

約数和(自身を含む): 585496296

約数和(自身を除く): 307135636

約数列:

[1, 2, 4, 5, 10, 20, 641, 1282, 2564, 3205, 6410, 12820, 21713, 43426, 86852, 108565, 217130, 434260, 13918033, 27836066, 55672132, 69590165, 139180330, 278360660]

約数ペア:

[(1, 278360660), (2, 139180330), (4, 69590165), (5, 55672132), (10, 27836066), (20, 13918033), (641, 434260), (1282, 217130), (2564, 108565), (3205, 86852), (6410, 43426), (12820, 21713)]