81183895

素因数分解:

$5^1\times {\mathrm{13}}^1\times {\mathrm{41}}^2\times {\mathrm{743}}^1$

素因数の和:843

約数の個数: 24

約数和(自身を含む): 107680608

約数和(自身を除く): 26496713

約数列:

[1, 5, 13, 41, 65, 205, 533, 743, 1681, 2665, 3715, 8405, 9659, 21853, 30463, 48295, 109265, 152315, 396019, 1248983, 1980095, 6244915, 16236779, 81183895]

約数ペア:

[(1, 81183895), (5, 16236779), (13, 6244915), (41, 1980095), (65, 1248983), (205, 396019), (533, 152315), (743, 109265), (1681, 48295), (2665, 30463), (3715, 21853), (8405, 9659)]