80891120

素因数分解:

$2^4\times 5^1\times {\mathrm{1011139}}^1$

素因数の和:1011152

約数の個数: 20

約数和(自身を含む): 188072040

約数和(自身を除く): 107180920

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1011139, 2022278, 4044556, 5055695, 8089112, 10111390, 16178224, 20222780, 40445560, 80891120]

約数ペア:

[(1, 80891120), (2, 40445560), (4, 20222780), (5, 16178224), (8, 10111390), (10, 8089112), (16, 5055695), (20, 4044556), (40, 2022278), (80, 1011139)]