440499568

素因数分解:

$2^4\times {\mathrm{43}}^1\times {\mathrm{640261}}^1$

素因数の和:640312

約数の個数: 20

約数和(自身を含む): 873317368

約数和(自身を除く): 432817800

約数列:

[1, 2, 4, 8, 16, 43, 86, 172, 344, 688, 640261, 1280522, 2561044, 5122088, 10244176, 27531223, 55062446, 110124892, 220249784, 440499568]

約数ペア:

[(1, 440499568), (2, 220249784), (4, 110124892), (8, 55062446), (16, 27531223), (43, 10244176), (86, 5122088), (172, 2561044), (344, 1280522), (688, 640261)]