20485480

素因数分解:

$2^3\times 5^1\times {\mathrm{512137}}^1$

素因数の和:512148

約数の個数: 16

約数和(自身を含む): 46092420

約数和(自身を除く): 25606940

約数列:

[1, 2, 4, 5, 8, 10, 20, 40, 512137, 1024274, 2048548, 2560685, 4097096, 5121370, 10242740, 20485480]

約数ペア:

[(1, 20485480), (2, 10242740), (4, 5121370), (5, 4097096), (8, 2560685), (10, 2048548), (20, 1024274), (40, 512137)]