257298220

素因数分解:

$2^2\times 5^1\times {\mathrm{1823}}^1\times {\mathrm{7057}}^1$

素因数の和:8889

約数の個数: 24

約数和(自身を含む): 540699264

約数和(自身を除く): 283401044

約数列:

[1, 2, 4, 5, 10, 20, 1823, 3646, 7057, 7292, 9115, 14114, 18230, 28228, 35285, 36460, 70570, 141140, 12864911, 25729822, 51459644, 64324555, 128649110, 257298220]

約数ペア:

[(1, 257298220), (2, 128649110), (4, 64324555), (5, 51459644), (10, 25729822), (20, 12864911), (1823, 141140), (3646, 70570), (7057, 36460), (7292, 35285), (9115, 28228), (14114, 18230)]