80870864

素因数分解:

$2^4\times {\mathrm{197}}^1\times {\mathrm{25657}}^1$

素因数の和:25862

約数の個数: 20

約数和(自身を含む): 157488804

約数和(自身を除く): 76617940

約数列:

[1, 2, 4, 8, 16, 197, 394, 788, 1576, 3152, 25657, 51314, 102628, 205256, 410512, 5054429, 10108858, 20217716, 40435432, 80870864]

約数ペア:

[(1, 80870864), (2, 40435432), (4, 20217716), (8, 10108858), (16, 5054429), (197, 410512), (394, 205256), (788, 102628), (1576, 51314), (3152, 25657)]