820032880

素因数分解:

$2^4\times 5^1\times {\mathrm{10250411}}^1$

素因数の和:10250424

約数の個数: 20

約数和(自身を含む): 1906576632

約数和(自身を除く): 1086543752

約数列:

[1, 2, 4, 5, 8, 10, 16, 20, 40, 80, 10250411, 20500822, 41001644, 51252055, 82003288, 102504110, 164006576, 205008220, 410016440, 820032880]

約数ペア:

[(1, 820032880), (2, 410016440), (4, 205008220), (5, 164006576), (8, 102504110), (10, 82003288), (16, 51252055), (20, 41001644), (40, 20500822), (80, 10250411)]