208911280

素因数分解:

$2^4\times 5^1\times {\mathrm{2611391}}^1$

素因数の和:2611404

約数の個数: 20

約数和(自身を含む): 485718912

約数和(自身を除く): 276807632

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 2611391, 5222782, 10445564, 13056955, 20891128, 26113910, 41782256, 52227820, 104455640, 208911280]

約数ペア:

[(1, 208911280), (2, 104455640), (4, 52227820), (5, 41782256), (8, 26113910), (10, 20891128), (16, 13056955), (20, 10445564), (40, 5222782), (80, 2611391)]