81033520

素因数分解:

$2^4\times 5^1\times {\mathrm{1012919}}^1$

素因数の和:1012932

約数の個数: 20

約数和(自身を含む): 188403120

約数和(自身を除く): 107369600

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 1012919, 2025838, 4051676, 5064595, 8103352, 10129190, 16206704, 20258380, 40516760, 81033520]

約数ペア:

[(1, 81033520), (2, 40516760), (4, 20258380), (5, 16206704), (8, 10129190), (10, 8103352), (16, 5064595), (20, 4051676), (40, 2025838), (80, 1012919)]