648640

素因数分解:

$2^6\times 5^1\times {\mathrm{2027}}^1$

素因数の和:2044

約数の個数: 28

約数和(自身を含む): 1545336

約数和(自身を除く): 896696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 2027, 4054, 8108, 10135, 16216, 20270, 32432, 40540, 64864, 81080, 129728, 162160, 324320, 648640]

約数ペア:

[(1, 648640), (2, 324320), (4, 162160), (5, 129728), (8, 81080), (10, 64864), (16, 40540), (20, 32432), (32, 20270), (40, 16216), (64, 10135), (80, 8108), (160, 4054), (320, 2027)]