1557219321

素因数分解:

$3^2\times 7^1\times {\mathrm{1193}}^1\times {\mathrm{20719}}^1$

素因数の和:21925

約数の個数: 24

約数和(自身を含む): 2572926720

約数和(自身を除く): 1015707399

約数列:

[1, 3, 7, 9, 21, 63, 1193, 3579, 8351, 10737, 20719, 25053, 62157, 75159, 145033, 186471, 435099, 1305297, 24717767, 74153301, 173024369, 222459903, 519073107, 1557219321]

約数ペア:

[(1, 1557219321), (3, 519073107), (7, 222459903), (9, 173024369), (21, 74153301), (63, 24717767), (1193, 1305297), (3579, 435099), (8351, 186471), (10737, 145033), (20719, 75159), (25053, 62157)]