261892016

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{380657}}^1$

素因数の和:380708

約数の個数: 20

約数和(自身を含む): 519217512

約数和(自身を除く): 257325496

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 380657, 761314, 1522628, 3045256, 6090512, 16368251, 32736502, 65473004, 130946008, 261892016]

約数ペア:

[(1, 261892016), (2, 130946008), (4, 65473004), (8, 32736502), (16, 16368251), (43, 6090512), (86, 3045256), (172, 1522628), (344, 761314), (688, 380657)]