20808640

素因数分解:

$2^6\times 5^1\times {\mathrm{65027}}^1$

素因数の和:65044

約数の個数: 28

約数和(自身を含む): 49551336

約数和(自身を除く): 28742696

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 65027, 130054, 260108, 325135, 520216, 650270, 1040432, 1300540, 2080864, 2601080, 4161728, 5202160, 10404320, 20808640]

約数ペア:

[(1, 20808640), (2, 10404320), (4, 5202160), (5, 4161728), (8, 2601080), (10, 2080864), (16, 1300540), (20, 1040432), (32, 650270), (40, 520216), (64, 325135), (80, 260108), (160, 130054), (320, 65027)]