20406280

素因数分解:

$2^3\times 5^1\times {\mathrm{510157}}^1$

素因数の和:510168

約数の個数: 16

約数和(自身を含む): 45914220

約数和(自身を除く): 25507940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 510157, 1020314, 2040628, 2550785, 4081256, 5101570, 10203140, 20406280]

約数ペア:

[(1, 20406280), (2, 10203140), (4, 5101570), (5, 4081256), (8, 2550785), (10, 2040628), (20, 1020314), (40, 510157)]