81222845

素因数分解:

$5^1\times {\mathrm{11}}^1\times {\mathrm{41}}^1\times {\mathrm{181}}^1\times {\mathrm{199}}^1$

素因数の和:437

約数の個数: 32

約数和(自身を含む): 110073600

約数和(自身を除く): 28850755

約数列:

[1, 5, 11, 41, 55, 181, 199, 205, 451, 905, 995, 1991, 2189, 2255, 7421, 8159, 9955, 10945, 36019, 37105, 40795, 81631, 89749, 180095, 396209, 408155, 448745, 1476779, 1981045, 7383895, 16244569, 81222845]

約数ペア:

[(1, 81222845), (5, 16244569), (11, 7383895), (41, 1981045), (55, 1476779), (181, 448745), (199, 408155), (205, 396209), (451, 180095), (905, 89749), (995, 81631), (1991, 40795), (2189, 37105), (2255, 36019), (7421, 10945), (8159, 9955)]