80907920

素因数分解:

$2^4\times 5^1\times {\mathrm{1011349}}^1$

素因数の和:1011362

約数の個数: 20

約数和(自身を含む): 188111100

約数和(自身を除く): 107203180

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1011349, 2022698, 4045396, 5056745, 8090792, 10113490, 16181584, 20226980, 40453960, 80907920]

約数ペア:

[(1, 80907920), (2, 40453960), (4, 20226980), (5, 16181584), (8, 10113490), (10, 8090792), (16, 5056745), (20, 4045396), (40, 2022698), (80, 1011349)]