81132880

素因数分解:

$2^4\times 5^1\times {\mathrm{1014161}}^1$

素因数の和:1014174

約数の個数: 20

約数和(自身を含む): 188634132

約数和(自身を除く): 107501252

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1014161, 2028322, 4056644, 5070805, 8113288, 10141610, 16226576, 20283220, 40566440, 81132880]

約数ペア:

[(1, 81132880), (2, 40566440), (4, 20283220), (5, 16226576), (8, 10141610), (10, 8113288), (16, 5070805), (20, 4056644), (40, 2028322), (80, 1014161)]